Process for producing α-substituted norbornanyl acrylates
US8466310B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 27, 2009 |
| Grant date | Jun 18, 2013 |
| Priority date | — |
| Expiry date | Jul 21, 2030 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2602/42
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Disclosed is a process for producing α-substituted norbornanyl acrylates efficiently on an industrial scale while suppressing the formation of by-products derived from intramolecular cyclization, excessive addition to acrylic acid etc. The α-substituted norbornanyl acrylates are useful as norbornene resist monomers. In the disclosed process, an α-substituted acrylic acid is directly reacted with a substituted norbornene in the presence of at least one acid catalyst selected from methanesulfonic acid and camphorsulfonic acid. It is possible in this reaction to suppress the formation of the by-products derived from intramolecular cyclication, excessive addition of the acid to the reaction product etc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.