A novel synthesis of 2'-hydroxy-1',3'-xylyl crown ethers
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 crownethers (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