Diastereoselective one pot five-component reaction toward 4-(tetrazole)-1,3-oxazinanes
作者:Ajay L. Chandgude、Daniele Narducci、Katarzyna Kurpiewska、Justyna Kalinowska-Tłuścik、Alexander Dömling
DOI:10.1039/c7ra07392e
日期:——
A diastereoselective onepot five-component reaction toward the synthesis of 4-(tetrazole)-1,3-oxazinanes has been reported. The sonication-accelerated, catalyst-free, simple, general and highly time efficient, Asinger–Ugi-tetrazole reaction was used for the synthesis of diverse 4-(tetrazole)-1,3-oxazinanes. The reaction exhibit excellent diastereoselectivity and broad substrate scope.
Two-Step Synthesis of Complex Artificial Macrocyclic Compounds
作者:Rudrakshula Madhavachary、Eman M. M. Abdelraheem、Arianna Rossetti、Aleksandra Twarda-Clapa、Bogdan Musielak、Katarzyna Kurpiewska、Justyna Kalinowska-Tłuścik、Tad A. Holak、Alexander Dömling
DOI:10.1002/anie.201704426
日期:2017.8.28
the Ugi‐reaction has been developed. This syntheticapproach of just two steps is unprecedented, short, efficient and works over a wide range of medium (8–11) and macrocyclic (≥12) loop sizes. The substrate scope and functional group tolerance is exceptional. Using this approach, we have synthesized 39 novel macrocycles by two or even one single synthetic operation. The properties of our macrocycles
Ugi Multicomponent Reaction Based Synthesis of Medium-Sized Rings
作者:Eman M. M. Abdelraheem、Rudrakshula Madhavachary、Arianna Rossetti、Katarzyna Kurpiewska、Justyna Kalinowska-Tłuścik、Shabnam Shaabani、Alexander Dömling
DOI:10.1021/acs.orglett.7b03094
日期:2017.11.17
An Ugi multicomponent reaction based two-step strategy was applied to generate medium-sized rings. In the first linear expansion phase, a series of diamines reacted with cyclic anhydrides to produce different lengths of terminal synthetic amino acids as the starting material for the second phase. The Ugi-4-center 3-component reaction was utilized to construct complex medium-sized rings (8–11) by the
An efficient Passerini tetrazole reaction (PT-3CR)
作者:Ajay L. Chandgude、Alexander Dömling
DOI:10.1039/c6gc00910g
日期:——
A sonication accelerated, catalyst free, simple, high yielding and efficient method for the Passerini-type three-component reaction (PT-3CR) has been developed.
A New Straightforward Formation of Aminoisoxazoles from Isocyanides
作者:Christophe Buron、Laurent El Kaïm、Aytekin Uslu
DOI:10.1016/s0040-4039(97)10155-1
日期:1997.11
The reaction of α-bromoketone oximes with isocyanides and sodium carbonate leads to a new formation of 5-aminoisoxazole derivatives. The reaction probably involves the intermediacy of a nitrosoalkene generated in situ. Good yields are obtained for electron deficient ketone oximes such as ethylbromopyruvateoxime; the use of a trifluoromethyl substitutedoxime gives a high efficient formation of trifluoromethyl