Crystal of spiroketal derivatives and process for preparation of spiroketal derivatives
申请人:Murakata Masatoshi
公开号:US08569520B2
公开(公告)日:2013-10-29
The present invention provides a process for preparing a spiroketal derivative, via an intermediate represented by Formula (VI):
wherein variable groups and numbers are as defined in the specification, which can be produced from dihalobenzene derivatives in one pot reaction.