Invention Application
- Patent Title: Methods of Making Fused Ring Compounds
- Patent Title (中): 制备稠环化合物的方法
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Application No.: US15344919Application Date: 2016-11-07
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Publication No.: US20170050909A1Publication Date: 2017-02-23
- Inventor: Meng He , Anil Kumar
- Applicant: Transitions Optical, Inc.
- Main IPC: C07C39/17
- IPC: C07C39/17 ; C07C51/353 ; C07D307/33 ; C07D311/94

Abstract:
The present invention relates to methods of making fused ring compounds, such as indeno-fused naphthols, and fused ring indenopyran compounds, such as indeno-fused naphthopyrans, that each employ an unsaturated compound represented by the following Formula II. Referring to the unsaturated compound of Formula II: Ring-A can be selected from optionally substituted aryl (e.g., phenyl); m can be, for example, from 0 to 4; R1 for each m can be selected from optionally substituted hydrocarbyl (e.g., C1-C6 alkyl) optionally interrupted with at least one linking group (e.g., —O—); and R3 and R16 can each be independently selected from, for example, hydrogen or optionally substituted hydrocarbyl, such as C1-C8 alkyl. When Ring-A is a phenyl group, the unsaturated compound represented by Formula II can be referred to as an unsaturated indanone acid/ester compound, or an indenone acid/ester compound (depending on whether R16 is hydrogen, or an optionally substituted hydrocarbyl group).
Public/Granted literature
- US09878971B2 Methods of making fused ring compounds Public/Granted day:2018-01-30
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