Syntheses of 2-n-alkylisothio-5-fluoro-4(1 or 3H)-pyrimidinone derivatives.
作者:SEIGO FUKUSHIMA、KAZUKO NORO、TADATAKA NORO、AKIRA UENO
DOI:10.1248/cpb.33.5053
日期:——
The reactions of ethyl monofluoromalonaldehyde potassium enolate (1) and S-n-alkylisothiourea (2a-e) gave 2-n-alkylthio-5-fluoro-4 (1 or 3H)-pyrimidinones (3a, d, e), 2-n-alkylthio-5-fluoro-6-monofluoromethyl-4 (1 or 3H)-pyrimidinones (4a-c) and 2-n-alkylthio-6-n-alkylthiomethyl-5-fluoro-4 (1 or 3H)-pyrimidinones (5a-e).
乙基单氟苹果醛钾烯醇盐 (1) 与 S-n-烷基异硫脲 (2a-e) 反应,得到 2-n-烷硫基-5-氟-4 (1 或 3H)-嘧啶酮 (3a, d, e)、2-n-烷硫基-5-氟-6-单氟甲基-4 (1 或 3H)-嘧啶酮 (4a-c) 以及 2-n-烷硫基-6-n-烷硫甲基-5-氟-4 (1 或 3H)-嘧啶酮 (5a-e)。