Succinyl chloride → Chroman

Participants

Reaction Steps

The same reaction and isolation procedures as Synthesis Example 1 were followed except that 10 millimoles each of the 2-substituted ethyl alcohols of Table 2 and 5 millimoles of adipoyl chloride were used in lieu of 2.5 g of 3,4-dihydro-2-(2-hydroxyethyl)-2,5,7,8-tetramethyl-2H-benzopyran-6-ol and 5 millimoles of succinyl chloride to give the corresponding 3,4-dihydro-2H-benzopyran derivative. The results are given in Table 2.

Provenance & Evidence