作者:Weili Zhao、Erick M. Carreira
DOI:10.1021/ol052587y
日期:2006.1.1
[reaction: see text] Phenylene-linked bisnaphthopyrans were synthesized in good yields via the one-pot reaction of bis-propargyl alcohols with naphthols. Temperature-dependent photochromism in 1,4-phenylene-linked bispyrans leads to up to 60 nm bathochromic shift between the colored species formed at room temperature and at -20 degrees C. Better fatigue resistance and higher colorability was observed
[反应:见正文]通过双炔丙基醇与萘酚的一锅反应以高收率合成了苯连接的双萘并吡喃。1,4-亚苯基连接的双吡喃中随温度变化的光致变色现象导致在室温和-20摄氏度下形成的有色物质之间出现高达60 nm的红移。在1,4-亚苯基中观察到更好的抗疲劳性和更高的可着色性与1,3-亚苯基连接的双-[2H]-萘并[1,2-b]吡喃相比,双-[2H]-萘并[1,2-b]吡喃。