One of the major reasons for studying chemical kinetics is to use measurements of the macroscopic properties of a system, such as the rate of change in the concentration of reactants or products with time. 1953-02-2, Name is Tiopronin, formurla is C5H9NO3S. In a document, author is Wen, Hao, introducing its new discovery. Name: Tiopronin.
Catalyst-Free [4+2] Cycloaddition of Ynamides with 2-Halomethyl Phenols To Construct 2-Amino-4H-Chromenes and alpha-Halo Enamides Simultaneously
We report the development of a facile protocol for the [4+2] cycloaddition of ynamides and 2-halomethyl phenols to afford the corresponding 2-amino-4H-chromenes and alpha-halo enamides under catalyst-free conditions. The reaction proceeds under mild conditions and exhibits good tolerance toward various functional groups and generates high yields. The plausible mechanism involves the formation of an active intermediate keteniminium as well as o-methylene quinone.
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Reference:
Pyrroline – Wikipedia,
,1-Pyrroline | C4H7N – PubChem