The crossed-aldol product formed when propanal acts as the electrophile and butanal as nucleophile is

Options

A. 3-hydroxy-2-methylpentanal
B. 3-hydroxy-2-methylhexanal
C. 2-ethyl-3-hydroxypentanal
D. 2-ethyl-3-hydroxyhexanal

Answer

C

Explanation

`underset("Acceptor")(CH_3CH_2CHO)+ underset("Nucleophile")(CH_3-CH_2-CH_2-CHO) rarr underset("(crossed aldol condensation)")(overset(5)CH_3-overset(4)CH_2-underset(OH)underset(|)overset(3)CH-underset(CH_2-CH_3)underset(|)overset(2)CH-overset(1)CHO)`