A New Synthesis of Diazenes (Azoalkanes) Using 4-(S,S-Dimethylsulfoximino)- 1,2,4-triazoline-3,5-dione. The Construction of Diazenes from Amino Nitrenes via Base-Induced Sulfoximine Cleavage
Cycloaddition−Fragmentation as a Route to Bicyclic Ring Systems. Use of the Intermolecular Diyl Trapping Reaction
作者:Joseph A. Leonetti、Tim Gross、R. Daniel Little
DOI:10.1021/jo951879h
日期:1996.1.1
A route to bicyclo[n.3.0] ring systems (n = 5-7) has been devised. Key transformations include an intermolecular diyltrappingreaction (1 + 3 --> 4), and fragmentation of the resulting tricyclic cycloadduct 4 (4 --> 5). A variety of diylophiles were examined, including electron deficient (6, 7, 21, 29, 30, 31), electron rich (8), and push-pull cycloalkenes (9, 10, 19, 20).
Intramolecular diyl trapping reactions. Arrhenius activation parameters for extrusion of nitrogen; Rate acceleration when diyl and diylophile are linked directly to one another
作者:R.Daniel Little、Charles F. Billera
DOI:10.1016/s0040-4039(00)82169-3
日期:1988.1
Arrhenius activation parameters, measured for a series of bicyclic diazenes ( and ) of utility in 1, 3-diyl trappingreactions, as well as the nature of the intermediate formed from deazetation of , have been determined.