تعداد نشریات | 158 |
تعداد شمارهها | 6,225 |
تعداد مقالات | 67,686 |
تعداد مشاهده مقاله | 115,001,923 |
تعداد دریافت فایل اصل مقاله | 89,680,750 |
SELECTIVE CYCLIZATION OF 2-PROPARGYLTHIO-6-METHYL-PYRIMIDIN- 4(1 H)-ONE TO THIAZOLO [3,2-a] PYRIMIDIN 7-ONE | ||
Journal of Sciences, Islamic Republic of Iran | ||
مقاله 6، دوره 9، شماره 1، خرداد 1998 اصل مقاله (239.7 K) | ||
چکیده | ||
Selective transformation of 2-propargylthio-6-methyl-pyrimidin-4(1H)On e (2) to 3,5-dimethyl-7H-thiazolo [3,2-a] pyrimidin-7-one (3) is performed under the conditionof base catalysis . For elucidation of structure, palladium catalyzed cyclization reaction of (2) was carried out and the structures of the products were assigned (5) and (6). These compounds underwent isomerization to (3) and (4) respectively. From this result, regioselectivity by base catalysis was concluded | ||
عنوان مقاله [English] | ||
- | ||
چکیده [English] | ||
- | ||
آمار تعداد مشاهده مقاله: 996 تعداد دریافت فایل اصل مقاله: 1,009 |