
تعداد نشریات | 163 |
تعداد شمارهها | 6,706 |
تعداد مقالات | 72,426 |
تعداد مشاهده مقاله | 129,845,149 |
تعداد دریافت فایل اصل مقاله | 102,537,491 |
SYNTHESIS OF (k) - 6,8-DIHYDROXY-3- ISOPROPYL-7-METHYLISOCHROMAN | ||
Journal of Sciences, Islamic Republic of Iran | ||
مقاله 7، دوره 5، شماره 3، اسفند 1994 اصل مقاله (192.43 K) | ||
چکیده | ||
The title isochroman ( 8 ) was synthesized as a suitable substrate for acetoxylation studies leading to an intermediate of type (4), expected to afford, on condensation with diketen, the fungal metabolite "rotiorin" type linear product (1). Cyclocondensation of alcohol (6), obtained by the reduction of ketone (5) with paraform in the presence of anhydrous aluminum chloride afforded the dimethoxyisochroman (7). Demethylation of (7) using boron tribromide in dichloromethane furnished the title isochroman (8). | ||
آمار تعداد مشاهده مقاله: 1,023 تعداد دریافت فایل اصل مقاله: 855 |