申请人:Cho Seo Yong
公开号:US20050059832A1
公开(公告)日:2005-03-17
The present invention relates to a synthesis of a 7-membered carbocyclic compound having diexomethylene groups, more particularly to a synthesis of a 7-membered carbocyclic compound having diexomethylene groups, a novel compound having the structure represented by the following Chemical Formula 1, from trimethylsilanylmethyl-allenol derivative by the intramolecular Prins cyclization using Lewis acid. The 7-membered carbocyclic compound is a useful intermediate for synthesis of other multicyclic compounds.
In Chemical Formula 1, R
1
is a C
1
to C
6
alkyl group, and R
2
and R
3
is respectively a hydrogen atom, or R
1
, R
2
and R
3
may be connected with neighboring substituents to form a 5 to 10-membered aliphatic or aromatic ring.
本发明涉及合成具有二亚甲基基团的7元环碳环化合物的方法,更具体地涉及使用Lewis酸对三甲基硅基-烯丙醇衍生物进行分子内Prins环化反应,合成具有以下化学式1所示结构的新型化合物的方法。该7元环碳环化合物是合成其他多环化合物的有用中间体。在化学式1中,R1是C1到C6烷基基团,R2和R3分别是氢原子,或者R1,R2和R3可以与相邻的取代基连接形成5到10元环的脂肪族或芳香族环。