The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Dec. 12, 2023
Filed:
Jun. 06, 2022
Shin-etsu Chemical Co., Ltd., Tokyo, JP;
Miyoshi Yamashita, Joetsu, JP;
Takeshi Kinsho, Joetsu, JP;
Shin-Etsu Chemical Co., Ltd., Tokyo, JP;
Abstract
The present invention relates to a process for preparing a (2-cyclopentenyl)acetate ester compound of general formula (2) as described herein, the process comprising: subjecting a haloacetaldehyde alkyl 2-cyclopentenyl acetal compound of general formula (1) as described herein to a dehydrohalogenation reaction in the presence of a base, followed by a rearrangement reaction to form the (2-cyclopentenyl)acetate ester compound of general formula (2). The present invention also relates to a process for preparing a (2-cyclopentenyl)acetic acid compound of general formula (3) as described herein, the process comprising hydrolyzing the (2-cyclopentenyl)acetate ester compound of general formula (2) to form the (2-cyclopentenyl)acetic acid compound of general formula (3). The present invention also relates to a haloacetaldehyde alkyl 2-cyclopentenyl acetal compound of general formula (1) as described herein.