Question

Question No. 19
The electron deficiency of
carbonyl carbon is decrease if the
substituent is
Answer
A
Benzene
B. Methyl group
C. Both a & b
D. None of these​

Answer 1

Answer

:Nucleophilic Reactions

The electron deficiency of the 1H-borirene ring caused by the available p-orbital on the sp2-hybridized boron atom results in reactions with electron excessive molecules by an attack at the boron atom. When the tricoordinate boron atom of the borirene ring became tetracoordinate by ligation with pyridine or a sterically suitable alcohol, the borirene ring was ruptured and, in the presence of a proton source, irreversibly converted at room temperature into the acyclic boronic esters (17) and (18), or on heating with acetic acid, into alkene. Prolonged treatment of a solution of (11) in toluene with dry oxygen converted about one third of borirene into alkyne by a suggested radical mechanism (Scheme 1). This transformation was accompanied by a formation of a small amount of 1,3-dioxa-2-borole indicated by mass spectrometry

Explanation:

Answer 2

Answer:

I think the answer should be BENZENE

Explanation:

BECAUSE it the aromatic compound

and aromatic compound are electrophilic