Me3SiI-promoted reaction of salicylic aldehydes with ketones via arylmethylation at the α-site of the carbonyl group and cyclodehydration of keto-diol provided a facile way to construct heteroannular ketals, furnishing benzopyranic [2,3-b]ketals and spiroketals in moderate to good yields.
在 Me3SiI 的促进下,
水杨醛与酮通过羰基 α 位芳基甲基化反应和酮二醇的环脱
水反应,以中等至较好的产率构建了杂环酮,并得到了苯并
吡喃 [2,3-b] 酮和螺酮。