Highly selective acylation of polyamines and aminoglycosides by 5-acyl-5-phenyl-1,5-dihydro-4H-pyrazol-4-ones
作者:Kostiantyn O. Marichev、Estevan C. Garcia、Kartick C. Bhowmick、Daniel J. Wherritt、Hadi Arman、Michael P. Doyle
DOI:10.1039/c7sc03184j
日期:——
phenyldiazoacetates, are highly selective acyl transfer reagents for di- and polyamines, as well as aminoalcohols and aminothiols. As reagents with a carbon-based leaving group, they have been applied for benzoyl transfer with a broad selection of substrates containing aliphatic amino in combination with other competing nucleophilic functional groups. The substrate scope and levels of selectivity for direct benzoyl
Coordination-polymeric triethanolamineperchlorato(triflato)metal inner complexes as additives for synthetic polymers
申请人:Wehner Wolfgang
公开号:US20090105387A1
公开(公告)日:2009-04-23
Stabilizer system for chlorinated polymers, especially PVC, comprising at least one coordination-polymeric triethanolamineperchlorato(triflato)metal inner complex comprising the monomer unit of the formula (A)
The stabilizer system may additionally comprise substituted cyanoacetylureas or/and 6-aminouracils or/and 3-aminocrotonic esters or/and hydantoins or/and monomeric or polymeric dihydropyridines or alkaline earth metal hydroxides or/and hydrotalcites or/and dawsonites or/and zeolites or/and glycidyl compounds or/and cyanamides or/and cyanoguanidines or/and melamines. In addition, phosphites or/and sterically hindered amines or/and NOR-HALS compounds may be present.