N, N′ — Ditritylurea and Analogs as Hosts in Crystalline Clathrate Complexes: Synthesis and Selectivity Studies
作者:Kwok-Keung Daniel Ng、Harold Hart
DOI:10.1016/0040-4020(95)00432-8
日期:1995.7
Of 38 hosts, most of them new, designed on the ‘wheel-and-axle’ model, 24 formed clathratecomplexes with small molecules; 95 new host/guest combinations are described (Table 6). Selectivitystudies (Table 7) show, in some instances, substantial discrimination between guests with similar structures.
N,N′-ditritylurea, a versatile host for crystalline host–guest complexes
作者:Harold Hart、Lon-Tang W. Lin、Donald L. Ward
DOI:10.1039/c39850000293
日期:——
N,N′-Ditritylurea forms stoicheiometric crystallinecomplexes with guests containing varied functionality; its large rigid end-groups prevent host–host close packing and leave substantial voids for guests, many of which hydrogen bond to the urea moiety.
Direct extraction of carbonyl from waste polycarbonate with amines under environmentally friendly conditions: scope of waste polycarbonate as a carbonylating agent in organic synthesis
作者:Sukhdeep Singh、Yong Lei、Andreas Schober
DOI:10.1039/c4ra14319a
日期:——
An efficient green method for converting polycarbonate into urea derivatives and bisphenol-A by sequestration of carbonyl from waste polycarbonate.