3-Carbonyl substituted isothiochromans (3,4-dihydro-1H-2-benzothiopyrans) 3 were synthesized in moderate yields in a one-pot process from dibromide 1 and 2-mercaptocarbonyl compounds 2. This method could be also extended to the synthesis of tetracyclic 1-H-anthraceno [2,3-c]thiopyran 5.
以二
溴化物 1 和 2-巯基化合物 2 为原料,通过一锅法合成了 3-羰基取代的异
硫代
吡喃(3,4-二氢-1H-2-苯并
硫吡喃)3,收率中等。这种方法也可扩展到四环 1-H-anthraceno [2,3-c]thiopyran 5 的合成。