发明名称 |
SYNTHESIS OF (4-FLUORO-3-PIPERIDIN-4-YL-BENZYL)-CARBAMIC ACID TERT-BUTYL ESTER AND INTERMEDIATES THEREOF |
摘要 |
The present invention is an improved method for the preparation of 4-fluoro-3-piperidin-4-yl-benzyl)-carbamic acid tert-butyl ester, compound of formula I. The invention is directed to a method of synthesis for the compound of formula I in three steps, comprising formation of 5-((tert-butoxycarbonyl)aminomethyl)-2-fluorobenzeneboronic acid (compound 11), reaction of compound 11 under Suzuki coupling conditions to yield (4-fluoro-2-pyridin-4-yl-benzyl)-carbamic acid tert-butyl ester and selective hydrogenation of the aforementioned product under hydrogenation conditions yields compound I. The invention is also directed to the intermediates 5-((tert-butoxycarbonyl)amino-methyl)-2-fluorobenzeneboronic acid (compound 11), and (4-fluoro-2-pyridin-4-yl-benzyl)-carbamic acid tert-butyl ester (compound 13).
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申请公布号 |
US2012184745(A1) |
申请公布日期 |
2012.07.19 |
申请号 |
US201213426721 |
申请日期 |
2012.03.22 |
申请人 |
CHOY NAKYEN;SHAY, JR. JOHN J.;SLEDESKI ADAM W.;SANOFI-AVENTIS U.S. LLC |
发明人 |
CHOY NAKYEN;SHAY, JR. JOHN J.;SLEDESKI ADAM W. |
分类号 |
C07D211/02;C07D213/55;C07F5/02 |
主分类号 |
C07D211/02 |
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