dipolarophiles

نتایج جستجو برای: dipolarophiles

تعداد نتایج: 103 فیلتر نتایج به سال:

Reaction of aromatic N-oxides with dipolarophiles. XIII. Cycloaddition behavior of some nitrones toward N-phenylmaleimide and conformation isomers of the cycloadducts.

Journal: :Chemical and Pharmaceutical Bulletin 1989

متن کامل

Synthesis and Biological Activity of Some New Pyrazoline and Pyrrolo[3,4-c]pyrazole-4,6-dione Derivatives: Reaction of Nitrilimines with Some Dipolarophiles

Journal: :Molecules 2008

متن کامل

Front Picture: α,β-Unsaturated Amides as Dipolarophiles: Catalytic Asymmetric exo -Selective 1,3-Dipolar Cycloaddition with Nitrones (Chem. Eur. J. 51/2017)

Journal: :Chemistry - A European Journal 2017

متن کامل

Synthesis and Reactivity of Aziridines with Internal Dipolarophiles: An Approach to 1,4-Dihydrochromeno[4,3-b]pyrroles and 3-Methylenechromano[4,3-b]pyrroles

Journal: :Synthesis 2015

متن کامل

Reaction of aromatic N-oxides with dipolarophiles. XIV. Inverse-type cycloaddition of pyridine N-oxides with 1,4-epoxy-1,4-dihydronaphthalene and its mechanistic aspects.

Journal: :Chemical and Pharmaceutical Bulletin 1990

متن کامل

Pericyclic Reaction of Ketenes with Cascade Reaction Products of Pyridine N-Oxides and Dipolarophiles. X-Ray Structures of the Adducts and Formation Mechanism

Journal: :Chemical and Pharmaceutical Bulletin 2003

متن کامل

Lewis acid mediated nucleophilic ring opening followed by cycloaddition of 2-aryl-N-tosylaziridines with carbonyl compounds: further support towards an SN2-type mechanism

2007

Manas K. Ghorai Koena Ghosh

A highly regioselective SN2-type ring opening of 2-aryl-N-tosylaziridines with carbonyl compounds in the presence of a Lewis acid to afford various 1,3-oxazolidines and 1,2-amino alcohols in excellent yields and moderate to high enantioselectivity is described. The formation of non-racemic products provides convincing evidence for the SN2-type ring opening mechanism. 2007 Elsevier Ltd. All righ...

متن کامل

Reaction of aromatic N-oxides with dipolarophiles. X. Role of charge-transfer complexes in 1,3-dipolar cycloaddition of pyridine N-oxides to phenyl isocyanate.

Journal: :Chemical and Pharmaceutical Bulletin 1986

متن کامل

Reaction of Diazo Ketones in the Presence of Metal Chelates. VII. 1,3-Dipolar Cycloaddition of 1-Methoxybenzo[c]pyrylium-4-olate with Acetylenic Dipolarophiles

Journal: :Bulletin of the Chemical Society of Japan 1979

متن کامل

Reaction of aromatic N-oxides with dipolarophiles. IX. Formation of 1:2 cycloadduct of 2-alkylpyridine N-oxides and phenyl isocyanates and a frontier molecular orbital study.

Journal: :Chemical and Pharmaceutical Bulletin 1986

متن کامل

1
2
3
4
5
6
7
8
9
10
11

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید