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Hemetsberger indole synthesis
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Hemetsberger indole synthesis : ウィキペディア英語版
Hemetsberger indole synthesis

The Hemetsberger indole synthesis (also called the Hemetsberger–Knittel synthesis) is a chemical reaction that thermally decomposes a 3-aryl-2-azido-propenoic ester into an indole-2-carboxylic ester.
Yields are typically above 70%. However, this is not a popular reaction, due to the lack of stability and difficulty in synthesizing the starting material.
==Reaction mechanism==
The mechanism is unknown. However, aziridine intermediates have been isolated. The mechanism is postulated to proceed via a nitrene intermediate.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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