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Photochemical Reactions of Caffeine with Aliphatic Aldehydes
Author(s) -
Erndt Aleksander,
Fiedorowicz Maciej,
Kostuch Andrzej,
Para Andrzej
Publication year - 1993
Publication title -
liebigs annalen der chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.825
H-Index - 155
eISSN - 1099-0690
pISSN - 0170-2041
DOI - 10.1002/jlac.1993199301167
Subject(s) - chemistry , caffeine , photochemistry , organic chemistry , medicine , endocrinology
Abstract Photochemical reactions of caffeine with several aliphatic aldehydes are performed. In the reactions with ethanal, propanal and butanal stable 8‐acyl‐8,9‐dihydrocaffeines 2 and 3 together with unreduced 8‐acylcaffeines 4 and 8‐(α‐hydroxyalkyl)caffeines 6 are produced. Under similar conditions, the reactions of 2‐methylpropanal, 2‐methylbutanal and 2,2‐dimethylbutanal resulted in the formation of the corresponding 8‐alkylcaffeines 7 .