Results 121 to 130 of about 17,972 (231)

1, 3-Dipolar Cycloaddition of Nitrones to Enamines

Nippon kagaku zassi, 1971
Otohiko TSUGE, Masashi TASHIRO, Yoko NISHIHARA   +2 more
openaire   +2 more sources

Synthesis of Pyrazolidines (5-membered heterocyclic rings) through 1, 3- dipolar cycloadditions of azomethine imines

IOSR Journal of Applied Chemistry, 2012
Dipolar cycloadditions of azomethine imines, formed in situ from aldehydes and hydrazines with electron deficient dipolarophiles produced pyrazolidines. Monosubstituted dipolarophiles afford principally 4substituted pyrazolidines.
openaire   +1 more source

Cycloaddition reactions of nitrosoalkenes, azoalkenes and nitrile oxides mediated by hydrotalcite [PDF]

, 2012
Mg:Al 3:1 hydrotalcite (Ht), used in catalytic quantities, promotes the generation of nitrosoalkenes, azoalkenes and nitrile oxides. These can be intercepted in situ by heterocycles and olefins in [4+2] and [3+2] cycloaddition reactions, producing ...
Lemos, A., Lourenço, J. P.
core  

Structure, liquid and solid state synthesis for dimers via [3+3] dipolar cycloadditions [PDF]

Arkivoc, 2005
Gheorghita N. Zbancioc, Maria C. Caprosu, Costel C. Moldoveanu, Ionel I. Mangalagiu   +3 more
openaire   +1 more source

Synthesis of Some New 3-Pyrrolidinylquinoline Derivatives via 1,3-Dipolar Cycloaddition of Stabilized Azomethine Ylides to Quinolinyl α,β- Unsaturated Ketones

, 2010
International audienceN-Metallated azomethine ylide generated from methyl (E)-N-benzylideneglycinate, LiBr and triethylamine underwent cycloaddition to quinolyl α,β- unsaturated ketones with excellent diastereoselectivity to afford new functionalised 3 ...
Belfaitah, Ali, Benali-Cherif, N., Bouraiou, Abdelmalek, Carboni, Bertrand, Debache, Abdelmadjid, Rhouati, Salah   +5 more
core   +1 more source

Recent advances of azomethine ylides for the synthesis of natural and synthetic bioactive pyrrolidines and spiropyrrolidines. [PDF]

RSC Adv
Paira P, Chakrabarty R, Deb Barman P, Singh B, Paira R.   +4 more
europepmc   +1 more source

Structure-Activity Relationships for 1,3-Dipolar Cycloaddition Reactions of Criegee Intermediates with Carbonyls. [PDF]

ACS Earth Space Chem
Cornwell ZA, Enders JJ, Ferris B, Murray C, Harrison AW.   +4 more
europepmc   +1 more source

The [3 + 2]- and [5 + 2]-cycloadditions of the cyclohepta-2,4-dienyl cation [PDF]

, 1987
Heilmann, Werner, Koschinsky, Rainer, Mayr, Herbert   +2 more
core   +1 more source

Radical/Ylide-Tunable Pyridinium Salt Enables Photo/Thermocatalytic Divergent [3 + 2] Cycloadditions. [PDF]

JACS Au
Sun F, Kuang Y, Wu X, Lin Z, Huang Z, Liu B, Li G, Zhang M, Hong L.   +8 more
europepmc   +1 more source

Nitrone chemistry: a versatile gateway to diverse heterocycles. [PDF]

RSC Adv
Mohapatra S, Prusty K, Bhol S, Panigrahi G, Nayak S.   +4 more
europepmc   +1 more source