Alan R. Katritzky

TL;DR: Diverse N‐protected di‐(3a–d, 3a’+ a′, 5a-d, 5d +‰d′, and 7a–g) and tripeptides and tri peptides were synthesized by acylation with 1‐(N‐protected‐α‐aminoacyl)benzotriazoles of the amino groups of free aspartic and glutamic acids.

TL;DR: The 1,4-addition of benzotriazole-stabilized carbanions to Michael acceptors is reviewed in this article, where the selectivity depends on the electronic effect of the carbanion, the type of the Michael acceptor, and steric effects.

TL;DR: The polarizabilities and the first and second hyperpolarizabilities of 219 conjugated organic compounds are modeled by QSPR based on a large pool of constitutional, topological, electronic and quantum chemical descriptors calculated by CODESSApro (comprehensive descriptors for structural and statistical analysis) derived solely from molecular structure.

TL;DR: In this paper, a dynamic n.m.r. method was applied to 1, 2,2,6-tetramethylpiperidine, giving the free energy difference for N-inversion [ΔG°(1E→1A)] as 1−9± 0·2 at 213 K (d.n.m.) and 1·95 ± 0·1 kcal mol−1 at 293 and 373 K (kinetic protonation).