| 초록 |
Reaction of 2,2-difluoro-1-tributylstannylethenyl tosylate 1 with 1,3-diiodobenzene in the presence of catalytic amount of Pd(PPh3)4 and CuI afforded 1,3-bis(2,2-difluoro-1-tosyloxyethenyl)benzene 2 in good yield. Stannylation of 2 with hexabutylbistin provided the corresponding 1,3-bis(2,2-difluoro-1-tributylstannylethenyl)benzene 3 in good yield. Cross-coupling reaction of 3 with 1-bromo-3-iodobenzene in the presence of catalytic amount of Pd(PPh3)4 and CuI gave the coupled product 4 in good yield. Further coupling reaction of 4 with arylstannane afforded the coupled prodcut 5 which showed the absorption peak at the range of 300-320 nm in UV spectrum. |
