List of top Organic Chemistry Questions

The reaction(s) that yield(s) X as the major product is (are)

A reaction of 10.50 g of 1,2-diphenylethane-1,2-dione with conc. NaOH followed by aqueous acidic work-up furnished 8.55 g of a carboxylic acid. The yield of the carboxylic acid in this reaction is _______ %.
(rounded off to the nearest integer)

The specific rotation of an optically pure compound is +75.3 (c 1.0 in CHCl₃) at 20 °C. A synthetic sample of the same compound showed a specific rotation of +66.3 (c 1.0 in CHCl₃) at 20 °C. The enantiomeric excess (ee) of the synthetic sample is _______ %.
(rounded off to the nearest integer)

Consider the following ¹H-NMR (400 MHz, DMSO-d₆) data of a compound :
δ in ppm: 3.85 (s, 6H), 6.73 (t, J = 2.2 Hz, 1H), 7.1 (d, J = 2.2 Hz, 2H), and 13.05 (brs, 1H).
The compound is

The acidity of the compounds shown below

follows the order

The suitable synthetic route(s) for the following transformation

is/are

The pair of proteins having heme core is

The major products X and Y in the following reactions

respectively, are

The suitable reagent combination for the following transformation

is

Among the following, the chiral molecule(s) is/are

Exhaustive hydrogenation of the following compound

under Pd/C generates a saturated hydrocarbon as the product.
The number of stereoisomers possible for this product is _______.

The major product formed in the following reaction

is

The compound(s) which on reaction with CH₃MgBr followed by treatment with aqueous NH₄Cl would produce 1-methyl-1-phenylethanol as the major product is/are

The major product formed in the following reaction Me Me ONO Me

is

In the following reaction

optically pure ester X formed product that did not exhibit optical rotation ([α]D=0) due to the formation of 
(Note: Ts=para-toluenesulfonyl; Ac=acetyl)

Among the following, the compound(s) which produce the same osazone as that obtained from D-glucose, when reacted with phenylhydrazine, is/are

The major product formed in the following reaction

is.

The following dipeptide derivative is used as an artificial sweetener:

The constituent α-amino acids of this dipeptide are

In the given reaction sequence, the amount of R produced (in g) is ______.

(Given: molar mass (in g mol^-1) of H = 1, C = 12, N = 14, O = 16, and S = 32)
(rounded off to two decimal places)

Which of the following is a meta directing group:

The IUPAC name of tartaric acid is:

In which limit test, Thioglycolic acid is used: