The catalysts are prepared from Ni(COD)2[31 and phosphane in the molar ratio 1 : 1. Ca. 1 mol of (I) can be converted by 1 mmol of the Ni catalyst. Apparently the C-C bond formation occurs on a LNi(o) species, since an of reaction. Accordingly, ( I ) is oligomerized only y1)cyclopropane. [4] M . En
Formation of Chiral N-Oxides from 2-Azabicyclo[3.3.0]octanes
✍ Scribed by Hans Günter Aurich; Michael Soeberdt; Klaus Harms
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 248 KB
- Volume
- 1999
- Category
- Article
- ISSN
- 1434-193X
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✦ Synopsis
Enantiopure 2-azabicyclo[3.3.0]octanes 1a-d and ent-1e pure compounds (2c,d and ent-2e). The structure of compounds 2a and ent-2e was confirmed by an X-ray study. were oxidized with mCPBA to provide either diastereomeric pairs of N-oxides (2a/3a and 2b/3b) or diastereomerically The factors that affect the oxidation process are discussed.
creasing size of the ester group, as is exemplified by the (Z)/
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(1__S__,3__S__,5__S__)‐2‐Amino‐3‐methoxymethyl‐2‐ azabicyclo[3.3.0]octane: SAMBO — a New Chiral Auxiliar (1__S__,3__S__,5__S__)‐2‐Amino‐3‐methoxymethyl‐2‐azabicyclo[3.3.0] octane (SAMBO) (8) was synthesized with an overall yield of 48% starting from the α‐amino acid derivative benzyl (1__S__,3__S__
The formation of 3-azabicyclo [3,3,0]oct-2-ene in the course of the synthesis of 3,0]octane using the Raschig process results from the following two consecutive reactions: chlorine transfer between the monochloramine and the 3-azabicyclo[3,3,0]octane followed by a dehydrohalogenation of the substitu
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