4-alkenyl-2-azetidinone derivatives, process for preparing 4-alkenyl-2-azetidinone derivatives and multicyclic compounds prepared using 4-alkenyl-2-azetidinone derivatives
US7879998B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 19, 2007 |
| Grant date | Feb 1, 2011 |
| Priority date | — |
| Expiry date | Aug 23, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/55
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to 4-alkenyl-2-azetidinone derivatives, a process for preparing 4-alkenyl-2-azetidinone derivatives and multicyclic compounds prepared using 4-alkenyl-2-azetidinone derivatives. More specifically, the present invention relates to a 4-alkenyl-2-azetidinone derivative having a novel structure represented by the following chemical formula 1, in which an alkenyl group such as 1,3-dien-2-yl or 1,2,4,5-hexatetraen-3-yl is substituted at the C-4 position of azetidinone; to a process for preparing the 4-alkenyl-2-azetidinone derivative by reacting 4-acetoxy-2-azetidinone with organic indium, which is prepared by reacting a propargyl halide derivative with indium; and to a novel multicyclic compound prepared using the compound represented by the following chemical formula 1 as an intermediate in the Diels-Alder reaction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.