α-Arylchalcogenation of acetone with diaryl dichalcogenide via metal-free oxidative C(sp3)-H bond functionalization
Direct α-arylchalcogenation of acetone with diaryl dichalcogenides has been achieved by using a mixture of TBHP and DTBP oxidants at 120 °C without transition-metal catalyst via oxidative C(sp3)-H bond functionalization. The method exhibits good functional group tolerance and products were isolated in moderate to high yields.
Orally absorbable cephalosporin antibiotics. 2. Structure-activity studies of bicyclic glycine derivatives of 7-aminodeacetoxycephalosporanic acid.
Three positional analogues (4-, 5-, and 7-) of benzothienylglycine and (N-acetylindolinyl)-5-glycine were prepared and coupled to 7-aminodeacetoxycephalosporanic acid (7-ADCA) to give the cephalosporins 17a-c. In addition two isomeric (2,3-b and 3,2-b) th
Phrmacologically active benzo[b]thiophen derivatives. IV. 5- and 6-Alkyl derivatives with an N-alkyl-N-(2-chloroethyl)aminomethyl group in the 3-position.
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Chapman,Clarke,Gore,Sawhney
p. 514 - 517
(2007/10/05)
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