632335-66-1Relevant articles and documents
Michael addition of nitroalkanes to nonactivated α,β-unsaturated δ-thiolactams: reactivity, diastereoselectivity, and comparison to α,β-unsaturated δ-lactams
So?nicki, Jacek G.
experimental part, p. 1336 - 1348 (2009/04/10)
Aliphatic nitrocompounds add to nonactivated α,β-unsaturated δ-thiolactams leading to 4-nitroalkyl functionalized δ-thiolactams in good yields. The addition is a stereocontrolled process with respect to substituents at C-6, and takes place producing trans
New stereoselective synthesis of 2-allyl-4-nitroalkylpiperidine-2-thiones and their transformation to annulated piperidinones
So?nicki, Jacek G.
, p. 1673 - 1677 (2007/10/03)
Highly stereocontrolled access to trans-3-allyl-4nitro-alkyl-1,6-disubstituted δ-thiolactams was achieved starting from piperidine-2-thione or commercially available 2-mercaptopyridine via Michael-addition of nitroalkanes to 5,6-dihydropyridin-2-thiones, S-allylation and thio-Claisen rearrangement. The corresponding lactams obtained by desulfurisation, were found to be suitable precursors for the construction of trans-fused bicyclic 2-piperidinone derivatives (octahydro[2]pyrindinones) in a regio- and stereoselective radical 5-exo-trig annulation process.