作者:M. van der Leij、H.J. Oosterink、R.H. Hall、D.N. Reinhoudt
DOI:10.1016/s0040-4020(01)98895-7
日期:1981.1
Six novel 2' - hydroxy - 1',3' - xylyl crown ethers (8a–e and 13)1 have been synthesized utilizing the allyl group to protect the OH function during the cyclization reaction. The macrocycles 6a-e were formed in yields of 26 to 52%, by intermolecular reaction of 4 - chloro - 2,6 - bis(bromomethyl) - 1 - (2 - propenyloxy)benzene (5) with polyethylene glycols; 6a was also obtained by an intramolecular
已经利用烯丙基合成了六种新颖的2'-羟基-1',3'-二甲苯基冠醚(8a – e和13)1,以在环化反应中保护OH的功能。通过4-氯-2,6-双(溴甲基)-1-(2-丙烯氧基)苯(5)与聚乙二醇的分子间反应形成大环6a-e,产率为26%至52%。通过单甲苯磺酸酯14的分子内环化反应也获得6a。