Ask Question, Ask an Expert

+1-415-315-9853

info@mywordsolution.com

Ask Chemistry Expert

problem 1)a) Draw the structure of following with numbering:

i) 1.3.7 - Trimethyl xanthene

ii) Pteridine

iii) 2-Benzyl thiazole

iv) 3-Methyl quinoline

v) 4-Propyl indole.

b) prepare in brief electrophilic substitution reaction of five membered, Benzene fused heterocyclic ring system.

problem 2)a) What are diastereomers? Describe with appropriate exs.

b) Draw the Fischer projection of:

i) Meso 2.3-Dibromobutane

ii) 2-Chlorobutane

iii) 2R, 3S-2-Chlorobutanol.

c) What is racemic resolution ? Describe with appropriate exs the various methods used

problem 3) Answer the following:

a) Trans 1, 2-dimethyl cyclohexane is more stable than its C is isomer. Why?

b) Describe cyclohexane is more stable in chair form than boat form.

c) describe:

i) Staggered and eclipsed

ii) Fischer projection formula.

d) Define the enantiomerism. Provide its pharmaceutical significance.

e) What are proteins? describe its structure.

f) Give the advantage of Z/E nomenclature over cis and trans with ex.

g) What are stereoselective and stereospecific reactions ? Give suitable exs.

problem 4) Answer the following:

a) Describe in brief conformation of n-butane.

b) prepare a detailed note on Racemic modification.

c) Indicate more stable and least stable chair conformation of di-substituted cyclohexane.

d) What is combinatorial chemistry? Give the strategies used in Deconvolution method.

e) What are amino acids ? describe different methods of synthesis of amino acid.

problem 5)a) Give the scheme of retrosynthesis of:

i) Propronolol

ii) Ciprofloxacin.

b) describe in short in about:

i) Solid supported synthesis

ii) Thiazole synthesis.

Chemistry, Academics

  • Category:- Chemistry
  • Reference No.:- M95488

Have any Question? 


Related Questions in Chemistry

Dr pepper has 400g of sugar per 12 oz of liquid calculate

Dr. Pepper has 40.0g of sugar per 12 oz. of liquid. Calculate the molarity of this solution. Put that molarity into your regression line and calculate the density (all other things being equal) of this sugar solution. Sh ...

1nbspcalculatenbspthe grams of na2co3nbsprequired to

1. Calculate the grams of Na 2 CO 3   required to prepare 250.0 mL of 0.375 M Na 2 CO 3  solution. 2. The reaction of sodium carbonate with hydrochloric acid produces carbonic acid and sodium chloride. If 25.00 mL of O.0 ...

The volume of a sample of nitrogen is 600 liters at 35oc

The volume of a sample of nitrogen is 6.00 liters at 35oC and 740 torr. What volume will it occupy at STP?

A 187 g sample of mg reacts with 800 ml of a hydrochloric

A 1.87 g sample of Mg reacts with 80.0 mL of a hydrochloric acid solution (pH = -0.544). What is the pH of the solution after all the Mg has reacted? Assume constant volume.

Identify the chemical components and the proportions

Identify the chemical components and the proportions necessary to achieve a buffer with the desired pH. Include relevant calculations in your answer.

Explain how bacteria are intimately involved in the

Explain how bacteria are intimately involved in the generation of acidic mine waters

Hello need help with the following chem Hello, need help with the following chem

Hello, need help with the following chem questions.  Aluminum reacts with chlorine gas to form aluminum chloride via the following reaction:  2Al(s)+3Cl2(g)→2AlCl3(s) You are given 24.0 g of aluminum and 29.0 g of chlori ...

Chemistry practice examdirections on actual exam the exam

Chemistry Practice Exam Directions on actual Exam: The exam consists of 2 sections (Chemical Bonding and Geometry and IMFs. Each multiple choice question is worth 4.33 points. You are allowed to use a scientific (nonprog ...

Explain the geochemical differences between acidic mine

Explain the geochemical differences between acidic mine waters and basic mine waters.

Question 1decide why the heat from a candle flame is barely

Question 1 Decide why the heat from a candle flame is barely tolerable when a person places his or her hand above the candle compared to when the hand is placed next to the candle. The highest temperature is at the tip o ...

  • 4,153,160 Questions Asked
  • 13,132 Experts
  • 2,558,936 Questions Answered

Ask Experts for help!!

Looking for Assignment Help?

Start excelling in your Courses, Get help with Assignment

Write us your full requirement for evaluation and you will receive response within 20 minutes turnaround time.

Ask Now Help with Problems, Get a Best Answer

Section onea in an atwood machine suppose two objects of

SECTION ONE (a) In an Atwood Machine, suppose two objects of unequal mass are hung vertically over a frictionless

Part 1you work in hr for a company that operates a factory

Part 1: You work in HR for a company that operates a factory manufacturing fiberglass. There are several hundred empl

Details on advanced accounting paperthis paper is intended

DETAILS ON ADVANCED ACCOUNTING PAPER This paper is intended for students to apply the theoretical knowledge around ac

Create a provider database and related reports and queries

Create a provider database and related reports and queries to capture contact information for potential PC component pro

Describe what you learned about the impact of economic

Describe what you learned about the impact of economic, social, and demographic trends affecting the US labor environmen