943420-83-5Relevant academic research and scientific papers
Four-component tandem reaction to synthesize dihydrotetrazolopyrimidinyl carbamides
Zeng, Li-Yan,Ji, Fei,Cai, Chun
, p. 237 - 241 (2012)
Four-component tandem procedure to prepare a series of dihydrotetrazolopyrimidinyl carbamides starting from diketene, amine, 5-aminotetrazole, and aldehyde was newly developed in the presence of iodine. Most of the products were obtained in moderate to good yield after simple workup of the final reaction mixture, the scope and limitation was also probed into..
2- Amino -3,4-dihydropyran -3- formamide analogue as well as preparation method and application thereof
-
Paragraph 0079-0081, (2020/03/25)
The invention relates to a preparation method 2 - of a compound containing, amino - 333384-dihydropyran - 3 3, which comprises the following step :1) of linking diketene with R. 2 NH2 The reaction is stirred in a solvent to complete. ;2) Is added R. 3 NH2 , R1 CHO And a of Compound, and adding elemental iodine to reaction solution to complete curing, and drying the filter cake to obtain compound 2 - containing. amino - 3333,4-dihydropyran - 3 3-carboxamide compound, according to the present invention as well as its use. without isolation of intermediate, in a simple.
