Synthesis and aggregation properties of novel amino acetals with the calix[4]resorcinol platform
作者:A. R. Burilov、L. I. Vagapova、M. A. Pudovik、T. N. Pashirova、I. S. Ryzhkina、L. A. Kudryavtseva、A. P. Timosheva、W. D. Habicher、A. I. Konovalov
DOI:10.1007/s11172-006-0352-6
日期:2006.5
Reactions of calixarenes with methylaminoacetaldehyde dimethyl acetal and formalin gave Mannich bases with the calixarene platform. It was found by dielcometric titration that calix[4]resorcinols with acetal groups in the aminomethyl fragment form head-to-head supra-molecular aggregates in chloroform at low concentrations.
作者:E. M. Kasymova、A. R. Burilov、N. A. Mukmeneva、S. V. Bukharov、G. N. Nugumanova、A. R. Ibragimova、A. P. Timosheva、L. Ya. Zakharova、L. A. Kudryavtseva、M. A. Pudovik、A. I. Konovalov
DOI:10.1007/s11172-009-0021-7
日期:2009.1
New amphiphilic benzylated calix[4]resorcinols were synthesized by the reaction of tetra-alkylcalix[4]resorcinols with 3,5-di(tert-butyl)-4-hydroxybenzyl acetate. The reaction pathway and the type of the products formed are determined by the structure of the alkyl substituent at the lower rim of tetraalkylcalix[4]resorcinols and the nature of acid used as a catalyst of the process. Self-organization
High-functionality polyether polyols and preparation thereof
申请人:BASF Aktiengesellschaft
公开号:US07122708B1
公开(公告)日:2006-10-17
The invention relates to high-functionality polyether polyols of the general formula
where each R′1 is an unsubstituted or substituted aliphatic or aromatic radical and each R′2 is an unsubstituted or substituted aliphatic or aromatic radical, H, OH, polyalkyl ether chain or halogen, each X is a polyalkyl ether chain or H, where at least one X is a polyalkyl ether chain, and m is an integer from 0 to 20, where Xm is H when m is 0, and n is an integer from 4 to 12, to processes for preparing such high-functionality polyether polyols and also to the use thereof for preparing polyurethanes and nonionic surfactants.