ChemInform Abstract: A Multicomponent Pathway-Inspired Regioselective Synthesis of 2,3,4-Trisubstituted 1H-Pyrroles via [3 + 2] Cycloaddition Reaction.

ChemInform ◽  
2015 ◽  
Vol 46 (43) ◽  
pp. no-no
Author(s):  
Hanuman P. Kalmode ◽  
Kamlesh S. Vadagaonkar ◽  
Kaliyappan Murugan ◽  
Atul C. Chaskar
Keyword(s):  
Cycloaddition Reaction ◽  
Regioselective Synthesis

Facile Regioselective Synthesis of 1,2,6,8-Tetraazaspiro[4.4]nona-2,6-dien-9-ones

2000 ◽  
Vol 55 (2) ◽  
pp. 222-226 ◽  
Author(s):  
Adel S. Girgis
Keyword(s):  
Cycloaddition Reaction ◽  
Regioselective Synthesis ◽  
Dipolar Cycloaddition

1,3-Dipolar cycloaddition reaction of nitrilimines to a variety of 3-aryl-5-arylmethylidene- 3,5-dihydro-2-phenyl-4H-imidazol-4-ones (3) afforded the corresponding 1,3,4,7,8-pentaaryl -1,2,6,8-tetraazaspiro[4.4]-nona-2,6-dien-9-ones (4) and not the regio-isomers 2,3,6,8,9-pentaaryl- 1,3,7,8-tetraazaspiro[4.4]nona-1,6-dien-4-ones (5) in high regioselectivity.

Regioselective Synthesis of Novel Spirooxindolo and Spiroindano Nitro Pyrrolidines Through 3+2 Cycloaddition Reaction

2006 ◽  
Vol 36 (2) ◽  
pp. 141-150 ◽  
Author(s):  
Mahalingam Poornachandran ◽  
Rajendran Muruganantham ◽  
Ragavachary Raghunathan
Keyword(s):  
Cycloaddition Reaction ◽  
Regioselective Synthesis

Regioselective Synthesis of Spiro[Naphthalene-2(1H),3′-[3H]Pyrazol]-1-Ones Utilizing 1,3-Dipolar Cycloaddition of Nitrilimines

2000 ◽  
Vol 2000 (1) ◽  
pp. 2-3 ◽  
Author(s):  
Nawal Mishriky ◽  
Adel S. Girgis ◽  
Yehia A. Ibrahim
Keyword(s):  
Cycloaddition Reaction ◽  
Regioselective Synthesis ◽  
Dipolar Cycloaddition ◽  
Spectroscopic Techniques

1,3-Dipolar cycloaddition reaction of nitrilimines to a variety of 2-arylmethylidene-3,4-dihydro-1-naphthalenones 1a–h afforded the corresponding spiro[naphthalene-2(1 H),3′-[3 H]pyrazol]-1-ones 3 and not the isomeric spiro[naphthalene-2(1 H),4′-[4 H]pyrazol]-1-ones 4, in high regioselectivity. The structure of the isolated products was established through different spectroscopic techniques and confirmed via HMBC.

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