Organic Chemistry Answers

. Compound H, reacts with benzenesulfonyl chloride in aqueous potassium hydroxide to give a precipitate, acidification result in no visible change. When compound H, is treated with sodium nitrite and HCl, at 0-5ºC, a yellow oily liquid is obtained.

(i) State the name of the Laboratory test described above.

(ii) Suggest the class of compounds to which compound H belong.

(iii) Given that compound H has the molecular formula, C₂H₇N, draw a possible structure for compound H.

How can a gitalin be synthesised using reagents?

I could only found biosynthesis of gitalin rather than chemical synthesis.Biosynthesis involves enzymatic reaction. However, I wish to know how is gitalin synthesised using reagents?

Methanol, CH3OH, is a good solvent for polar substances because: (1) Methanol undergoes dipole-dipole interactions. (2) Methanol is able to form hydrogen bonds with the polar substances. (3) There are weak ion-dipole interactions in methanol. (4) The van der Waals forces in methanol cause repulsion. 

Which of the following alkyl halides will undergo hydrolysis the fastest? (1) (CH3)3Cl (2) (CH3)3Br (3) (CH3)3F (4) (CH3)3I 

 Which of the following species can react as a nucleophile to react in an SN1-type reaction?  (1) (CH3)2C=O (2) H2O (3) CN- (4) CH3Cl 

If the substrate, CH3CHBrCH2CH3, is replaced by CH3CHFCH2CH3 in a nucleophilic substitution reaction, then (1) the rate at which each reaction takes place is the same. (2) the reaction will take place at a much faster rate. (3) the rate of the reaction will be twice as fast. (4) the reaction will not take place. 

7. Which of the following nucleophilic substitution reactions will TAKE PLACE THE FASTEST?  (1)  CH2BrOHH2OCH2OH+    Br (2) OHH2O+    BrBrCH3CH3HO (3) OHH2O+    BrBrHHHO (4)  OHH2O+    BrCH3CH2BrCH3CH2OH 

 Which of the following species will react the fastest with CH3CH2CH2-I in a nucleophilic substitution reaction? (1)  (CH3)3CO (2) HO (3) H2O (4) CH3CO2 

Draw the eclipsed conformation of cyclopropane

Nickel complex with dimethyl glyoxime is soluble in; *

neutral solution

acidic solution

basic solution

all of these