Helvetica Chimica Acta p. 1681 - 1684 (1986)
Update date:2022-07-29
Topics:
Hombrecher, Hermann
Margaretha, Paul
Tissot, Paul
Comparative results on the reduction of 4,6,7,8-tetrahydro-7,7-dimethyl-2H-1-benzopyran-2,5(3H)-diones 1 are reported.Hydride reduction (LiAlH4 in Et2O or NaBH4 in i-PrOH) affords 2,3,4,6,7,8-hexahydro-5H-1-benzopyran-5-ones 5 in 30-60 percent isolated yi
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