Solution Found!
4-Hydroxy- and 5-hydroxyaldehydes exist primarily as
Chapter 21, Problem 19P(choose chapter or problem)
QUESTION:
Problem 19P
4-Hydroxy- and 5-hydroxyaldehydes exist primarily as cyclic hemiacetals. Draw the structure of the cyclic hemiacetal formed by each of the following:
a. 4-hydroxybutanal b. 4-hydroxypentanal c. 5-hydroxypentanal d. 4-hydroxyheptanal
Questions & Answers
QUESTION:
Problem 19P
4-Hydroxy- and 5-hydroxyaldehydes exist primarily as cyclic hemiacetals. Draw the structure of the cyclic hemiacetal formed by each of the following:
a. 4-hydroxybutanal b. 4-hydroxypentanal c. 5-hydroxypentanal d. 4-hydroxyheptanal
ANSWER:
Solution 19P
(a)
4-hydroxybutanal has the OH group at the 4th position with respect to the aldehyde group. So a five membered cyclic hemiacetal will be formed.
(b)