HILLARD III R. L.; VOLLHARDT K. P. C., TETRAHEDRON, 1980, 36, NO 17, 2435-2440
作者:HILLARD III R. L.、 VOLLHARDT K. P. C.
DOI:——
日期:——
Potential routes to cyclobuta[1,2-C] cyclopropabenzene
作者:Russell L. Hillard、K.Peter C. Vollhardt
DOI:10.1016/0040-4020(80)80220-1
日期:1980.1
The CpCo(CO)2-catalyzed cyclization of 1-trimethylsilyl-1, 5-hexadiyne (4) with propargyltetrahy-dropyranylether (5 leads to the formation of both possible regioisomers of the benzocyclobutene product: 3-trimethylsilyl-4-tetrahydropyranyloxymethylbenzocyclobutene (6) and the corresponding 5-tetrahydropyranyloxymethyl-isomer 7. On the other hand, cyclization of the same diyne with 3-(trimethylsilyloxy)