申请人:——
公开号:US20030040632A1
公开(公告)日:2003-02-27
A process suitable for safely mass-producing, through a short step, cyclic compounds useful in medicines, agricultural chemicals, foods, cosmetics, and chemical products or as intermediates therefor. The process, which is for producing a compound represented by the formula:
1
{wherein Z represents an electron-attracting group; W represents optionally substituted ethylene or optionally substituted vinylene; R
3
represents hydrogen or an optionally substituted hydrocarbon group; and X represents a divalent group [provided that when W represents optionally substituted vinylene, then —X—CH
2
—Z is not —X
1
—X
2
—CH
2
—Z (wherein X
1
represents sulfur or optionally substituted nitrogen and X
2
represents optionally substituted ethylene)]} or a salt thereof, is characterized by subjecting a compound represented by the formula (II) or a salt thereof:
2
(wherein the symbols have the same meanings as the above) to a ring closure reaction in a solvent containing a carbonic diester.
一种适用于安全批量生产用于药品、农药、食品、化妆品和化学产品或其中间体的环状化合物的过程,通过简短步骤。该过程用于生产由以下公式表示的化合物:
1
(其中Z代表一个吸电子基团;W代表可选择取代的乙烯或可选择取代的乙烯基;R
3
代表氢或可选择取代的碳氢基团;X代表二价基团[但当W代表可选择取代的乙烯基时,那么—X—CH
2
—Z不是—X
1
—X
2
—CH
2
—Z(其中X
1
代表硫或可选择取代的氮,X
2
代表可选择取代的乙烯基)]或其盐,其特征在于将由以下公式(II)或其盐表示的化合物:
2
(其中符号具有与上述相同的含义)置于含有碳酸二酯的溶剂中进行环闭合反应。