?-Carotene a yellow food-coloring agent and dietary source of vitamin A, can be prepared by a double

Question:

?-Carotene a yellow food-coloring agent and dietary source of vitamin A, can be prepared by a double Witting reaction between 2 equivalents of ?-ionylideneacetaldehyde and a diylide. Show the structure of the ?-carotene product.

Fantastic news! We've Found the answer you've been seeking!

Step by Step Answer:

Related Book For book-img-for-question

Organic Chemistry

ISBN: 9780495112587

7 Edition

Authors: John McMurry

See More Books

Question Posted: Feb 23, 2011 05:52 AM

See More Questions

A compound known as Hagemann's ester can be prepared by treating a mixture of formaldehyde and ethyl acetoacetate first with base and then with acid and heat. Write the structure for the product of...
The following alkyl bromide can be prepared by reaction of the alcohol (S)-2-pentanol with PBr3. Name the compound, assign (R) or (S) stereochemistry, and tell whether the reaction of the alcohol...
Show how racemic valine can be prepared by each of the following methods: (a) The Hell-Volhard-Zelinski reaction (b) The amidomalonate synthesis (c) The Strecker synthesis
Suppose there are three buyers of candy in a market: Tex, Dex, and Rex. The market demand and the individual demands of Tex, Dex, and Rex are shown on the next page. a. Fill in the table for the...
Which of the following employee benefits has the greater value? Use the formula given in the Financial Planning Calculations box on page 65 to compare these benefits. (Assume a 28 percent tax rate.)...
Clinicians at a nursing home facility want to see if giving residents a plant to tend to will help lower depression. To test this idea, the residents are randomly assigned to one of two groups: Those...
Describe how to choose appropriate statistical techniques to test hypotheses
Veronica Regaldo creates a new business in Mexico on January 1, Year 8, to operate a retail store. Transactions of Regaldo Department Stores during January Year 8 in preparation for opening its first...
Hi there; this is just a list of terms that I could just google, but I wanted a sort of different explanation / definition if that's okay. That's all! (They're just Business Law terms) 1. Condition...
A buyer of a futures contract in Imagination with an underlying value of 400,000 on 1 August is required to deliver an initial margin of 5 per cent to the clearing house. This margin must be...
What carbonyl compound and what phosphorus ylide might you use to prepare each of the followingcompounds? (c) (b) (a) "CH CH2 () (e) (d)
When o-phthalaldehyde is treated with base, o-(hydroxymethyl) benzoic acid is formed. Show the mechanism of this reaction. CO2H 1. "OH 2. * " "CH2 o-Phthalaldehyde o-(Hydroxymethyl)benzoic acid
Assume you are a consultant working with a software company that is interested in developing on-line and e-service options for their customers. What advice would you offer for a company on how to...
5.Descibe the HSI color image model 6. Describe the basic relationship between the pixels
1. What is the need for transform? 2. What is Image Transform? 3. What are the applications of transform? 4. Give the Conditions for perfect transform . 5. What are the properties of unitary...
6. Define Fourier transform pair 7. Define Fourier spectrum and spectral density 8. Give the relation for 1-D discrete Fourier transform pair 9. Specify the properties of 2D Fourier transform. 10....
16. What is wrap around error? 17. Give the formula for correlation of 1D continuous function. 18. What are the properties of Haar transform. 19. What are the Properties of Slant transform 20....
21. Define fast Walsh transform. 22. Give the relation for 1-D DCT. 23. Write slant transform matrix SN. 24. Define Haar transform. 25. Define K-L transform. 26. Give the equation for singular value...
Creative Problem Solving for Internal Auditors Synopsis Internal auditors must think creatively. Creative thinking is a method. Brainstorming sessions are a creative method: they are a structured...
We all experience emotions, but some people disguise their true feelings better than others. Do you think this is a helpful or harmful thing to do? Under what conditions do you think it would be most...
Predict the shape of the XeF 4 molecule and a hybridization scheme consistent with this prediction.
Write structural formulas for the following: (a) Methyl propanoate (b) Ethyl p-nitrobenzoate (c) Dimethyl malonate (d) N, N-Dimethylbenzamide (e) Pentanenitrile (f) Dimethyl phthalate (g) Dipropyl...
Starting with either cis-or trans-HO2C--CH==CH--CO2H (i.e., either maleic or fumaric acid) and using any other needed compounds, outline syntheses of each of the following: (a) (b) (c) CO2H CO2H
Give stereochemical formulas for compounds A-Q: (a) (b) (c) (d) (e) (f) (g) p-toluenesultonyl (1)LAIHa (-)-D (GH120) (2) (R)-(-)-2-Butanol pyridine (1) LiAlH4 2 +D (CH120) (R)-(-)-2-Butanol- ga E...
nformation pertaining to Noskey Corporation s sales revenue follows: November 2 0 2 1 ( Actual ) December 2 0 2 1 ( Budgeted ) January 2 0 2 2 ( Budgeted ) Cash sales $ 1 0 5 , 0 0 0 $ 1 1 5 , 0 0 0...
The management team of Netflix maintains a stable dividend using the Lintner model: Dt+1 = Dt + EPS Target Payout Where Dt (Dt+1) = dividend in the current period t (the next period t + 1) EPSt =...
#1 #2 hapter 50 10 D Werences lav Help Required information [The following information applies to the questions displayed below) Archer Company is a wholesaler of custom-built air-conditioning units...

?-Carotene a yellow food-coloring agent and dietary source of vitamin A, can be prepared by a double

Question:

CHO (PhlgPCH" CHP(Phi3 A diylide B-Ionylideneacetaldehyde

Step by Step Answer:

H Ph3P CPph 3 Xal...View the full answer

Organic Chemistry

Students also viewed these Organic Chemistry questions