One-step formation of fused tetracyclic skeletons from cyclohexene-diynes and carbon monoxide through Rh(i)-catalyzed [2 + 2 + 2 + 1] cycloaddition reaction
作者:Joseph J. Kaloko、Yu-Han Gary Teng、Iwao Ojima
DOI:10.1039/b909781c
日期:——
Rapid construction of 5-7-6-5 fused tetracyclic carbocycles and heterocycles from cyclohexene-diynes and CO has been achieved in one step through a Rh(i)-catalyzed [2 + 2 + 2 + 1] cycloaddition process.
Iron(II) Halide Promoted Cyclization of Cyclic 2-Enynamides: Stereoselective Synthesis of Halogenated Bicyclic γ-Lactams
作者:Ming-Chang P. Yeh、Yuan-Shin Shiue、Hsin-Hui Lin、Tzu-Yu Yu、Ting-Chia Hu、Jia-Jyun Hong
DOI:10.1021/acs.orglett.6b00916
日期:2016.5.20
A simple and mild process was developed for the highly stereoselectivesynthesis of halogenated bicyclic [4.3.0] and [3.3.0] γ-lactams, possessing four stereocenters, from easily available cyclic 2-enynamides. The reaction required only an inexpensive iron(II) halide under dry air and was tolerant of aryl, heteroaryl, and alkyl groups at the alkyne terminus.
<i>cis</i>- and <i>trans</i>-Stereoselective Epoxidation of N-Protected 2-Cyclohexen-1-ylamines
作者:Peter O'Brien、Amanda C. Childs、Gareth J. Ensor、Cheryl L. Hill、Jonathan P. Kirby、Michael J. Dearden、Sally J. Oxenford、Clare M. Rosser
DOI:10.1021/ol035873n
日期:2003.12.1
The first systematic study of the cis and trans stereoselectivity in the m-CPBA epoxidation of N-protected cyclic allylic amines has been completed. Mono-N-protected systems gave epoxides with cis stereochemistry (amides are better cis directors than sulfonamides or carbamates) whereas di-N-protected systems gave trans-epoxides (TsNBoc protection gave complete trans stereoselectivity). [structure:
The stereodivergent aziridination of allylic carbamates, amides and sulfonamides
作者:Stephen G. Davies、Kenneth B. Ling、Paul M. Roberts、Angela J. Russell、James E. Thomson、Philip A. Woods
DOI:10.1016/j.tet.2010.06.059
日期:2010.8
A stereodivergent protocol for the aziridination of a range of cyclic allylic amine derivatives has been developed. syn-Products can be obtained in >99:1 dr under H-bonded control and anti-products are obtained in >99:1 dr under steric control by judicious choice of the N-protecting groups. (C) 2010 Elsevier Ltd. All rights reserved.
HENRY, JAMES R.;MARCIN, LAWRENCE R.;MCINTOSH, MATTHIAS C., TETRAHEDRON LETT., 30,(1989) N2, C. 5709-5712
作者:HENRY, JAMES R.、MARCIN, LAWRENCE R.、MCINTOSH, MATTHIAS C.