23025-55-0Relevant articles and documents
Stereo-controlled asymmetric bioreduction of α,β-dehydroamino acid derivatives
Stueckler, Clemens,Winkler, Christoph K.,Hall, Melanie,Hauer, Bernhard,Bonnekessel, Melanie,Zangger, Klaus,Faber, Kurt
supporting information; experimental part, p. 1169 - 1173 (2011/07/09)
α,β-Dehydroamino acid derivatives proved to be a novel substrate class for ene-reductases from the 'old yellow enzyme' (OYE) family. Whereas N-acylamino substituents were tolerated in the α-position, β-analogues were generally unreactive. For aspartic aci
Reaction of N-(p-Tolylsulfonyl)diphenylcyclopropenimine with Pyridinium and Isoquinolinium Ylides
Pilli, Ronaldo Aloise,Rodrigues, J. Augusto,Kascheres, Albert
, p. 1084 - 1091 (2007/10/02)
N-(p-Tolylsulfonyl)diphenylcyclopropenimine (2) reacted smoothly with pyridinium N-carbethoxyamide (3) to afford a new ylide (5), in addition to stilbene 4, uracil 6, and pyrimidone 7.An observed thermal transformation of 5 to 6 and 7 is discussed.Reaction of the cyanocarboethoxy methylides 15a-c with 2 produced the internal salts 16a-c, while the dicarbethoxy, monocarbethoxy, and benzoyl methylides 15d-f gave the pyridine-free cyclics 26, 28, and 29, respectively.The isoquinolinium methylides 31a-c reacted in an analogous fashion, while the N-amides 33a,b afforded cycloadducts 34a,b.A series of reactions used to correlate the structures of the latter is described, including an observed cycloaddition mode for diphenylcyclopropenone (1) with 33a-c which yielded 39, 37, and 42, respectively.
Studies on diazepines. XVI. Synthesis of monocyclic 1,3-diazepines. (1). Thermolysis of 1,2-diazepines formed from methylpyridine N-imides
Kurita,Kojima,Tsuchiya
, p. 3688 - 3695 (2007/10/02)
-
