Plant coumarins: XV. Oreoselone in the synthesis of 3-[(Z)-alkenyl]- and 3-(1H-1,2,3-triazol-4-yl)psoralens
作者:A. V. Lipeeva、E. E. Shul’ts
DOI:10.1134/s1070428015070012x
日期:2015.7
Sonogashira reaction of 2-isopropyl-3-(trifluoromethanesulfonyloxy)psoralen with terminal arylacetylenes gave 2-isopropyl-3-(arylethynyl)psoralens which were converted into the corresponding Z-alkenes by reduction with hydrogen in the presence of Lindlar catalyst or by thermal decomposition of preliminarily prepared Ti(II)-alkyne complexes. The reaction of 2-isopropyl-3-(trifluoromethanesulfonyloxy)psoralen with trimethylsilylacetylene afforded 2-isopropyl-3-[(trimethylsilyl)ethynyl]psoralen which reacted with 4-(omega-azidoalkyl) phenols in the presence of copper(I) bromide and triethylamine to produce 3-1-[omega-(4-hydroxyaryl)-alkyl]-1H-1,2,3-triazol-4-yl}-2-isopropylpsoralens.