Y. Masuyama et al., RING CONSTRUCTION OF HOMOALLYLIC ALCOHOLS AND ALDEHYDES WITH N-CHLOROSUCCINIMIDE TIN(II) CHLORIDE, Synthetic communications, 25(13), 1995, pp. 1989-1995
The reaction of homoallylic alcohols and aldehydes with N-chlorosuccin
imide/tin(II) chloride in dichloromethane led to ring construction to
produce 2-substituted 4-chlorotetrahydropyrans diastereoselectively.