ISSN:
0009-2940
Keywords:
Chemistry
;
Inorganic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Description / Table of Contents:
New Reagents, II. 1-Phenyl-1,2-diazaallyllithium: Preparation and Reactions1-Phenyl-1,2-diazaallyllithium (1a) reacts with primary alkyl halides at N-1 to give formaldehyde alkylphenylhydrazones (2a-c) and with aldehydes and ketones at C-3 to yield α-hydroxyaldehyde phenylhydrazones (3a-e). With acenaphthylene 1,3-anionic cycloaddition occurs with formation of the tetrahydropyrazol derivative 6b. Cycloaddition of 1,3-diphenyl-1,2-diazaallyllithium (1b) to benzyne leads to 1,3-diphenyl-1H-indazole (8).
Notes:
1-Phenyl-1,2-diazaallyllithium (1a) reagiert mit prim. Alkylhalogeniden an N-1 zu Formaldehydalkylphenylhydrazonen (2a-c), mit Aldehyden und Ketonen an C-3 zu α-Hydroxyaldehydphenylhydrazonen (3a-e) und mit Acenaphthylen unter 1,3-anionischer Cycloaddition zum Tetrahydropyrazol-Derivat 6b. Die Cycloaddition von 1,3-Diphenyl-1,2-diazaallyllithium (1b) an Dehydrobenzol führt zu 1,3-Diphenyl-1H-indazol (8).
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/cber.19771100909
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