Stereoselectivity in nucleophilic substitution of trithiane derivatives
✍ Scribed by Tadashi Sugawara; Hiizu Iwamura; Michinori Ōki
- Publisher
- Elsevier Science
- Year
- 1975
- Tongue
- French
- Weight
- 200 KB
- Volume
- 16
- Category
- Article
- ISSN
- 0040-4039
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The stereoselective palladium catalysed reaction between aUyl acetates and imino esters is reported. For suitable substrates, diastereoselectivities are good (up to 84:16), and in the presence of enantiomerically pare phosphorus-containing oxazoline ligands, the enantioselectivities (up to 97% ee) a
that the principal mechanism of stabilisation of such carbanions by adjacent sulphur was by polarizatior?,'. ### 2.4. 6Trisubstituted s-trithiane derivatives exist in two isomeric forms as lower melting a-isomers (cis-trans form) and &isomers lcis-cis formjs. We were studying the stereochemical be
Tertiary carbanions generated from a-substituted phenylacetonitriles in liquid ammonia add to nitrobenzenes in the para position to form the corresponding oH-adducts which are transformed, depending on the starting nitriles and the reaction conditions, to products of oxidative nucleophilic substitut