Synthesis of Polysubstituted Triptych-boroxazolidines^1,2

Novel Stannatrane N(CH2CMe2O)2(CMe2CH2O)SnO-t-Bu and Related Oligonuclear Tin(IV) Oxoclusters. Two Isomers in One Crystal

“…In recent years, a variety of symmetric as well as unsymmetrical trialkanolamines have been synthesized. Representative examples are N­(CH 2 ­CMe 2 OH) 3 , N­(CH 2 ­CMe 2 OH) 2 ­(CH 2 CH 2 OH), N­(CH 2 CMe 2 OH)­(CH 2 CH 2 OH) 2 , N­(CH 2 CHMeOH) 2 ­(CH 2 ­CH 2 OH), N­(CHMe­CH 2 OH) 3 , and N­(CH 2 ­CMe 2 OH) 2 ­(CH 2 CH 2 ­CH 2 OH) . Also mentioned in the literature was N­(CH 2 ­CMe 2 OH) 2 ­(CMe 2 ­CH 2 OH). , However, to the best of our knowledge, this compound was not characterized by any spectroscopic method.…”

Synthesis of 3,4-dihydro-2H-pyrans by hetero-Diels–Alder reactions of functionalized α,β-unsaturated carbonyl compounds with N-vinyl-2-oxazolidinone

“…Also the influence of phenyl, 4-nitrophenyl or 4methoxyphenyl groups present in enones on diastereoselectivity and yields of products was compared. Compounds 1a-d 28,32 and 1e-g [33][34][35] were obtained according to the methods described in literature. They exist mainly as E isomers with s-Z conformation, which is suitable for Diels-Alder cycloaddition.…”

“…Sulfones and sulfides 1e-g were prepared by a procedure described in refs. 33-35: 3-phenylsulfonyl-4-(4-nitrophenyl)-3-buten-2one 1e, 33 3-phenylsulfenyl-4-(4-nitrophenyl)-3-buten-2-one 1f, 34 4-acetylamino-3-phenylsulfenyl-3-buten-2-one 1g. 35 N-Vinyl-2oxazolidinone 2 was synthesized according to a procedure described in the literature.…”