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[期刊论文] 作者:Jian Quan Fan,La Sheng Jiang,M, 来源:中国化学快报(英文版) 年份:2004
Two novel biscrown ethers with rigid cisltrans ethylene linker were synthesized v/a Wittig reaction in high yield (about 80%).Their pure cis/trans-isomers were...
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