The reaction rate of a catalyzed reaction is faster than the reaction rate of the uncatalyzed reaction at the same temperature. 274-09-9, Name is Benzo[d][1,3]dioxole, SMILES is C12=CC=CC=C1OCO2, in an article , author is Schley, Daniela, once mentioned of 274-09-9, Application In Synthesis of Benzo[d][1,3]dioxole.
Diastereoselective cyclisation of N-alkenylideneamines into 3,4-dihydro–2H-pyrrol-1-ium halides
A number of new chiral 2-(alpha-bromoalkyl)pyrrolinium salts and 2-(alpha-selenoalkyl)pyrrolidines were synthesized by the halocyclisation and selenocyclisation, respectively, of N-(alkenylidene)alkylamines and subsequent reduction. These cyclisations were implemented in a diastereomeric fashion for the first time. Substrate control (starting imines possessing chirality in the N-alkyl or the N-alkenyl substituent) and reagent control (chiral organoselenenyl bromides) were applied. Asymmetric induction by stereocentres of the alkenylidene or double asymmetric induction by chiral selenenyl bromides on unsaturated imines with a chiral N-alkyl group resulted in diatereoselectivities up to 84:16. ((c) Wiley-VCH Verlag GmbH & Co.
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Reference:
Pyrroline – Wikipedia,
,1-Pyrroline | C4H7N – PubChem