A catalyst don’t appear in the overall stoichiometry of the reaction it catalyzes, SDS of cas: 39711-79-0, but it must appear in at least one of the elementary reactions in the mechanism for the catalyzed reaction. 39711-79-0, Name is N-Ethyl-2-isopropyl-5-methylcyclohexanecarboxamide, molecular formula is C13H25NO. In an article, author is Naidu, Kalaga Mahalakshmi,once mentioned of 39711-79-0.
Here, we are reporting a single-step transformation of N-protected alpha,beta-unsaturated gamma-amino amides into 5,5-disubstituted gamma-lactams through a base-mediated new molecular rearrangement. In contrast to the known N- to C(O) cyclization of saturated gamma-amino acids into corresponding gamma-lactams, the new rearrangement involves the cyclization between N-terminal C-gamma- to C-terminal amide N. The cyclization process was initiated by the migration of double bond from alpha,beta -> beta,gamma position. The enamine-imine tautomerization of the new beta,gamma-double bond and subsequent 5-exo-trig cyclization of terminal amide leads to the formation of N-protected 5,5-disubstituted gamma-lactam. The structures of various gamma-lactams obtained from the rearrangement were studied in single crystals. Overall, the results reported here demonstrate the facile and single-step transformation of N-protected alpha,beta-unsaturated gamma-amino amides into gamma-lactams and provided an excellent opportunity to construct small-molecule peptidomimetics.
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Reference:
Amide – Wikipedia,
,Amide – an overview | ScienceDirect Topics