Working with Hazardous Chemicals
... Caution! Dicyclohexylcarbodiimide is a potent allergen and should be handled with gloves. A 500-mL, one-necked flask equipped with a calcium chloride drying tube is charged with 28.83 g (0.20 mol) of monoethyl fumarate (Note 1), 200 mL of dry dichloromethane (Note 2), 44.47 g (0.60 mol) of tert-buty ...
... Caution! Dicyclohexylcarbodiimide is a potent allergen and should be handled with gloves. A 500-mL, one-necked flask equipped with a calcium chloride drying tube is charged with 28.83 g (0.20 mol) of monoethyl fumarate (Note 1), 200 mL of dry dichloromethane (Note 2), 44.47 g (0.60 mol) of tert-buty ...
Dehydration of Cyclohexanol – Preparation of an Alkene
... Dehydration of Cyclohexanol – Preparation of an Alkene ...
... Dehydration of Cyclohexanol – Preparation of an Alkene ...
Exam 1 from 2008
... 5. (10 pts) Allene has the structure H2C=C=CH2. a) Draw an accurate 3D structure of allene. (Hint: It is not planar.) On this structure show the p-orbitals and how they overlap to form the pi bonds in allene. Clearly indicate the 3D orientation of the p-orbitals relative to the atoms in the molecule ...
... 5. (10 pts) Allene has the structure H2C=C=CH2. a) Draw an accurate 3D structure of allene. (Hint: It is not planar.) On this structure show the p-orbitals and how they overlap to form the pi bonds in allene. Clearly indicate the 3D orientation of the p-orbitals relative to the atoms in the molecule ...
Carboxylic Acid Questions 1.-Arrange the following in order of (i
... (b) Butanoic acid : oxidation of the corresponding alcohol will give the carboxylic acid, so prepare the alcohol by substitution. (c) Pentanoic acid : need to gain a C to get C5. One way to do this is via the reaction of the Grignard reagent with carbon dioxide. Alternatively, substitution with NaCN ...
... (b) Butanoic acid : oxidation of the corresponding alcohol will give the carboxylic acid, so prepare the alcohol by substitution. (c) Pentanoic acid : need to gain a C to get C5. One way to do this is via the reaction of the Grignard reagent with carbon dioxide. Alternatively, substitution with NaCN ...
Chemical Reactions.
... How many sodium (Na) atoms react? n How many sodium (Na) atoms are in the product? n This violates the law of conservation of ...
... How many sodium (Na) atoms react? n How many sodium (Na) atoms are in the product? n This violates the law of conservation of ...
Biochemistry Worksheet
... 43. Are lipids polar or non-polar? What happens to lipids when they are placed in water? 44. Compared to carbohydrates, what is true about the ratio of carbon & hydrogen atoms to oxygen atoms? If a compound has more bonds, what can it store more of in those bonds? 45. Most lipids are made of _______ ...
... 43. Are lipids polar or non-polar? What happens to lipids when they are placed in water? 44. Compared to carbohydrates, what is true about the ratio of carbon & hydrogen atoms to oxygen atoms? If a compound has more bonds, what can it store more of in those bonds? 45. Most lipids are made of _______ ...
RSC PPT Template Blue and White
... A list of yet to be invented transformations that would be worthy of a Nobel prize: Suggested Criteria…… unimaginable via existing technology (surprising) access to structures of socio-economic importance (Impact) platform for expanding our understanding of synthetic chemistry transformations ...
... A list of yet to be invented transformations that would be worthy of a Nobel prize: Suggested Criteria…… unimaginable via existing technology (surprising) access to structures of socio-economic importance (Impact) platform for expanding our understanding of synthetic chemistry transformations ...
S8 + ___ F2 → ___ SF6 - Canvas by Instructure
... reacting with nitric acid to produce copper (II) nitrate and nitrogen dioxide. What is the reducing agent? ...
... reacting with nitric acid to produce copper (II) nitrate and nitrogen dioxide. What is the reducing agent? ...
6-organic - fixurscore
... There is no further oxidation of the ketone under these conditions. Tertiary alcohols cannot be oxidised at all by potassium dichromate: This is because there is no hydrogen atom bonded to the carbon with the OH group Distinguishing between Aldehydes and Ketones The fact that aldehydes can be furthe ...
... There is no further oxidation of the ketone under these conditions. Tertiary alcohols cannot be oxidised at all by potassium dichromate: This is because there is no hydrogen atom bonded to the carbon with the OH group Distinguishing between Aldehydes and Ketones The fact that aldehydes can be furthe ...
C h e m g u i d e ... ALCOHOLS: OXIDATION
... to redraw it! But once you have done some work on ketones, you will find that the structure drawn here is a common way of drawing them.) d) The product (butanone) isn’t oxidised by acidified potassium dichromate(VI) solution. There needs to be a hydrogen attached directly to the carbon next door to ...
... to redraw it! But once you have done some work on ketones, you will find that the structure drawn here is a common way of drawing them.) d) The product (butanone) isn’t oxidised by acidified potassium dichromate(VI) solution. There needs to be a hydrogen attached directly to the carbon next door to ...
Balancing Chemical Equations
... compounds. Therefore you add another to the front of the compound. Since the compounds cannot be separated, you cannot just add a two in front of the oxygen atom only, it has to be in front of the whole compound. ...
... compounds. Therefore you add another to the front of the compound. Since the compounds cannot be separated, you cannot just add a two in front of the oxygen atom only, it has to be in front of the whole compound. ...
Organic Chemistry II / CHEM 252 Chapter 21 – Phenoles and Aryl
... • Allyl phenyl ethers undergo a rearrangement to an allyl phenol • intramolecular; the allyl group migrates to the aromatic ring – The unstable keto intermediate undergoes keto-enol tautomerization to give the phenol group • The reaction is concerted. ...
... • Allyl phenyl ethers undergo a rearrangement to an allyl phenol • intramolecular; the allyl group migrates to the aromatic ring – The unstable keto intermediate undergoes keto-enol tautomerization to give the phenol group • The reaction is concerted. ...
97KB - NZQA
... Heat a small amount of each white solid in a boiling-tube. The boiling tube should have a bung in it, with a delivery tube going into a test-tube of limewater. If the limewater turns from colourless to cloudy during heating, this indicates that carbon dioxide gas has been produced and the white soli ...
... Heat a small amount of each white solid in a boiling-tube. The boiling tube should have a bung in it, with a delivery tube going into a test-tube of limewater. If the limewater turns from colourless to cloudy during heating, this indicates that carbon dioxide gas has been produced and the white soli ...
Fall.2008.Week9.Lesson.2 - reich
... • It’s already balanced. • The Ag and Na switched places. • That’s why it’s a double displacement. ...
... • It’s already balanced. • The Ag and Na switched places. • That’s why it’s a double displacement. ...
Spring 2015 CH 421 Name ________________________________________ Section ___________ Post‐lab 3: The Grignard Reaction: Preparation of an Alcohol
... 4) Aldehydes undergo reaction with a Grignard reagent to provide an alcohol product. Many aldehydes are prone to air oxidation. For instance, a bottle of benzaldehyde will turn from a clear liquid to a white solid if left open over time. What is the oxidation produ ...
... 4) Aldehydes undergo reaction with a Grignard reagent to provide an alcohol product. Many aldehydes are prone to air oxidation. For instance, a bottle of benzaldehyde will turn from a clear liquid to a white solid if left open over time. What is the oxidation produ ...
Unit 13 Worksheet Answers
... (a) HgO is added to the system increase (c) decrease the temperature of the system. increase (b) Hg is added to the system. decrease (d) the volume is decreased. No change 18) Predict the effect of decreasing the temperature on the position of the following equilibrium. (a) H 2 (g) + Cl 2 (g) ↔ 2HCl ...
... (a) HgO is added to the system increase (c) decrease the temperature of the system. increase (b) Hg is added to the system. decrease (d) the volume is decreased. No change 18) Predict the effect of decreasing the temperature on the position of the following equilibrium. (a) H 2 (g) + Cl 2 (g) ↔ 2HCl ...
Synthesis of Four Diastereomeric 3,5-Dialkoxy-2,4
... of all four diastereomeric aldol productss3-alkoxy-2methylalkanalsswith high enantiocontrol by a unique nonaldol route.3 The key step of this new method involved the intramolecular hydride transfer from the methylene group of either an epoxy alcohol (prepared with high enantioselectivity by a Sharpl ...
... of all four diastereomeric aldol productss3-alkoxy-2methylalkanalsswith high enantiocontrol by a unique nonaldol route.3 The key step of this new method involved the intramolecular hydride transfer from the methylene group of either an epoxy alcohol (prepared with high enantioselectivity by a Sharpl ...
Reactions Unit Plan
... of metals and solubility rules. B. Apply the Law of Conservation of Mass to writing and balancing chemical equations. (MOCLE 1.1.I.a, b) 1. Represent a chemical equation in words and formulas. 2. Balance a chemical equation using the Law of Conservation of ...
... of metals and solubility rules. B. Apply the Law of Conservation of Mass to writing and balancing chemical equations. (MOCLE 1.1.I.a, b) 1. Represent a chemical equation in words and formulas. 2. Balance a chemical equation using the Law of Conservation of ...
Unit A Remediation Review
... 13. Describe what occurs in the following reaction types, the general equation and an example for each: a) Formation b) Decomposition c) Single Replacement d) Double Replacement e) Combustion 14. Write a balanced chemical equation for the following reactions. Indicate what type of reaction is occurr ...
... 13. Describe what occurs in the following reaction types, the general equation and an example for each: a) Formation b) Decomposition c) Single Replacement d) Double Replacement e) Combustion 14. Write a balanced chemical equation for the following reactions. Indicate what type of reaction is occurr ...
Strychnine total synthesis
Strychnine total synthesis in chemistry describes the total synthesis of the complex biomolecule strychnine. The first reported method by the group of Robert Burns Woodward in 1954 is considered a classic in this research field. At the time it formed the natural conclusion to an elaborate process of molecular structure elucidation that started with the isolation of strychnine from the beans of Strychnos ignatii by Pierre Joseph Pelletier and Joseph Bienaimé Caventou in 1818. Major contributors to the entire effort were Sir Robert Robinson with over 250 publications and Hermann Leuchs with another 125 papers in a time span of 40 years. Robinson was awarded the Nobel Prize in Chemistry in 1947 for his work on alkaloids, strychnine included. The process of chemical identification was completed with publications in 1946 by Robinson and later confirmed by Woodward in 1947. X-ray structures establishing the absolute configuration became available between 1947 and 1951 with publications from J. M. Bijvoet and J.H. Robertson .Woodward published a very brief account on the strychnine synthesis in 1954 (just 3 pages) and a lengthy one (42 pages) in 1963.Many more methods exist and reported by the research groups of Magnus, Overman, Kuehne, Rawal, Bosch, Vollhardt, Mori, Shibasaki, Li, Fukuyama Vanderwal and MacMillan. Synthetic (+)-strychnine is also known. Racemic synthesises were published by Padwa in 2007 and in 2010 by Andrade and by Reissig.In his 1963 publication Woodward quoted Sir Robert Robinson who said for its molecular size it is the most complex substance known.