One-pot synthesis of 3(5)-ethoxycarbonylpyrazoles

被引：0
|
作者：
Martins, MAP
Freitag, R
Flores, AFC
Zanatta, N
机构：
来源：
SYNTHESIS-STUTTGART | 1995年 / 12期
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D O I：
暂无
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
A one-pot synthesis of ethoxycarbonylpyrazoles 2a-e, by the cyclocondensation of beta-alkoxyvinyl trichloromethyl ketones la-e with hydrazine hydrochloride under mild conditions, is reported. A study using compounds 1a-e with different substituents proved that these are versatile building blocks for the synthesis of pyrazole derivatives, having a 3(5)-ethoxycarbonyl substituent, in good yields (70-91%).
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页码：1491 / &
页数：3
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