Results 91 to 100 of about 291 (140)

Photocycloaddition reactions of a bis-2H-azirine

Journal of the Chemical Society, Chemical Communications, 1977
Irradiation of 3,3′-(2,2′-biphenylene)bis-(2H)-azirine with electron-deficient dipolarophiles gives cycloadducts derived from a transient azabicyclo[3.1.0]hexene intermediate.
Albert Padwa, Hao Ku
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Equilibration of 2H-azirine with vinylnitrene

Journal of the Chemical Society, Chemical Communications, 1972
Treatment of 2,3-diaryl-2H-azirine-2-carboxamide with triphenylphosphine and carbon tetrachloride affords the triphenyliminophosphorane (4).
openaire   +1 more source

Organocatalyzed nucleophilic addition of pyrazoles to 2H-azirines: asymmetric synthesis of 3,3-disubstituted aziridines and kinetic resolution of racemic 2H-azirines

Chemical Communications, 2016
An asymmetric nucleophilic addition of pyrazoles to 2H-azirines via organocatalytic kinetic resolution afforded chiral aziridines and azirines simultaneously.
Dong, An, Xukai, Guan, Rui, Guan, Lajiao, Jin, Guangliang, Zhang, Suoqin, Zhang   +5 more
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Formation of 2H-azirines by the pyrolysis of 1,2,3-triazoles

Journal of the Chemical Society D: Chemical Communications, 1971
1-Phthalimido-1,2,3-triazoles (1) thermally fragment in the vapour phase; the products isolated are 2H-azirines (2) and compounds derived from these azirines by further fragmentation or rearrangement.
D. J. Anderson, T. L. Gilchrist, G. E. Gymer, C. W. Rees   +3 more
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ChemInform Abstract: ALKYLATION AND SILYLATION OF 2H‐AZIRINES

Chemischer Informationsdienst, 1985
AbstractDas Azirin (I) wird zu (II) lithiiert, das mit elektrophilen Reagentien in der Seitenkette zu (III) substituiert wird.
P. F. BELLOIR, A. LAURENT, P. MISON, R. BARTNIK, S. LESNIAK   +4 more
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Exploiting 2-Halo-2H-Azirine Chemistry

Current Organic Synthesis, 2004
H-Azirines are the smallest unsaturated heterocyclic compounds containing nitrogen. Despite their strain many stable azirines are known. Due to the high reactivity 2H-azirines have been explored extensively for various synthetic purposes. The ring system occurs naturally in the antibiotics azirinomycin, isolated from Streptomyces auras cultures ...
Teresa Pinho e Melo, Antonio Gonsalves
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Microwave spectrum of 3-methyl-2H-azirine

Journal of Molecular Structure, 1997
Abstract The microwave spectrum of 3-methyl-2H-azirine produced by pyrolyzing N -chloro-2-methylaziridine was observed. This new, unstable molecule was identified based on a comparison of observed molecular constants and those determined by an ab initio MO calculation. The rotational constants are A = 22338.04(4), B = 6618.622(9), and C = 5464.
Masaaki Sugie, Harutoshi Takeo, Chi Matsumura   +2 more
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Asymmetric radical additions of trialkylboranes to 2H-azirine-3-carboxylates

Chemical Communications, 2004
AbstractFor Abstract see ChemInform Abstract in Full Text.
Erik, Risberg, Andreas, Fischer, Peter, Somfai   +2 more
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ChemInform Abstract: REACTION OF 2H‐AZIRINES WITH NITRONES

Chemischer Informationsdienst, 1974
AbstractDiphenylazirin (I) reagiert mit den Isochinolin‐N‐oxiden (I) zu den Isochinolinen (III) und dem Diamid (IV).
A. PADWA, K. CROSBY
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Thermal rearrangements of 2,3-diphenyl-2H-azirine

Journal of the Chemical Society, Perkin Transactions 1, 1973
Heating 2,3-diphenyl-2H-azirine in a sealed tube at 250 °C for 3 h yields 2-phenylindole, 2,3,4,5-tetraphenylpyrrole, 2,4,5-triphenylimidazole, and 1-benzyl-2,4,5-triphenylimidazole as major products, with tetraphenylpyrazine, tetraphenylpyrimidine, pentaphenylpyridine, benzonitrile, benzamide, and stilbene being produced in smaller yield.
John H. Bowie, Brian Nussey
openaire   +1 more source