7-(tert-Butyl-dimethyl-silanyloxymethyl)-benzo[1,2-b;4,3-b']dithiophene-2-carbaldehyde 、 [7-((1S,2S,3R,4R)-3-Hydroxy-4,7,7-trimethyl-bicyclo[2.2.1]hept-2-ylcarbamoyl)-benzo[1,2-b;4,3-b']dithiophen-2-ylmethyl]-triphenyl-phosphonium; chloride 在
potassium tert-butylate 作用下,
以
四氢呋喃 、
甲醇 为溶剂,
以79%的产率得到7-{(Z)-2-[7-(tert-Butyl-dimethyl-silanyloxymethyl)-benzo[1,2-b;4,3-b']dithiophen-2-yl]-vinyl}-benzo[1,2-b;4,3-b']dithiophene-2-carboxylic acid ((1S,2S,3R,4R)-3-hydroxy-4,7,7-trimethyl-bicyclo[2.2.1]hept-2-yl)-amide