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

Determine the mass of glucose c6h12o6s needed to produce a

Determine the mass of glucose, C6H12O6(s), needed to produce a 0.150m glucose solution in 50.0mL of C2H5OH(l), density 0.789g/mL

What mass of nah2po4 must be added to 120 l of 020 m

What mass of NaH 2 PO 4 must be added to 1.20 L of 0.20 M Na 2 HPO 4 to make a buffer solution whose pH=6.90? pK a2 (H 3 PO 4 )=7.21.

Using the following data calculate the pressure of 100mol

Using the following data, calculate the pressure of 1.00mol of Ar(g) in a 40.0L container at 25 degrees Celcius using both the ideal gas equation and the real gas equation. Why are these two values so different? (aAr=136 ...

The plate height in a particularly packed gas

The plate height in a particularly packed gas chromatography column is characterized by the van Deemter equation with parameters: A= 1.50 mm, B= 25.0 mm ml/min, and C = 0.0250 mm min/mL. a) Please use spreadsheet to cons ...

When 450 g of an unknown nonvolatile nonelectrolyte is

When 45.0 g of an unknown nonvolatile nonelectrolyte is dissolved in 500.0 g of water, the resulting solution freezes at -0.930 °C. What is the molar mass of the unknown substance? K f  = 1.86 °C/ m  for water.

1 perchloric acid is either a broslashnsted-lowry acid or a

1. Perchloric acid is either a Brønsted-Lowry acid or a Brønsted-Lowry base. If it is an acid, what is it's conjugate base? On the other hand, if it is a base what is it's conjugate acid? 2. Phosphate ion is either a Brø ...

Potassium sulfate is commonly used in fertilizers an

Potassium sulfate is commonly used in fertilizers. An agricultural researcher in alaboratory measures and weighs a 150.0-g sample of potassium sulfate for herexperiment. The solid sample is dissolved in enough water to m ...

At a particular location in a countercurrent stripper for

At a particular location in a countercurrent stripper for the removal of solute A from a liquid stream, the mole fraction of the transferring species A in the bulk gas phase is 0.01, and the mole fraction of solute A in ...

1 the stress induced in a column subjected to an eccentric

1. The stress induced in a column subjected to an eccentric load is given by the following equation; P/A = (S yc /[1+(ex/k 2 )sec((l/2k)(√(P/AE)))]) where P is the axial load (lb f ), A is the cross-sectional area of the ...

A ground state h-atom absorbs a photon of wavelength 9491

A ground state H-atom absorbs a photon of wavelength 94.91 nm, and its electron attains a higher energylevel. The atom then emits two photons: one of wavelength 1281 nm to reach an intermediate level, and a second to ret ...

  • 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

WalMart Identification of theory and critical discussion

Drawing on the prescribed text and/or relevant academic literature, produce a paper which discusses the nature of group

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