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The chemistry of N-substituted benzotriazoles: a novel route to dienamines

✍ Scribed by Alan R. Katritzky; Qiu-He Long; Ping Lue

Book ID
104216186
Publisher
Elsevier Science
Year
1991
Tongue
French
Weight
234 KB
Volume
32
Category
Article
ISSN
0040-4039

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## Abstract 1‐Methylbenzotriazole (2a) is lithiated readily with butyllithium or LDA at the methyl group to 4 and the subsequent reaction with various electrophiles provides 1‐substituted benzotriazoles 5. Other 1‐(__n__‐alkyl)benzotriazoles 2 also undergo lithiation with LDA, the carbanions can be

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## Abstract 1‐(Trimethylsilylmethyl)benzotriazole is readily prepared from benzotriazole and chloromethyltrimethylsilane. It undergoes fluoride‐catalyzed desilylation with carbonyl compounds and forms an anion that can be alkylated and acylated readily and undergoes Peterson olefination. 1‐(Cyclohe