The novel phenethylamine derivatives of the general formula ##STR1## wherein R.sup.1 and R.sup.2 each signify hydrogen, halogen, trifluoromethyl, lower alkoxy, lower alkyl, hydroxy or nitro, with the proviso that at least one of R.sup.1 and R.sup.2 is different from hydrogen, R.sup.3 and R.sup.4 each signify lower alkyl, n signifies the number 1, 2, 3 or 4 and B signifies the group --CO-- or --CHOH--, and their pharmaceutically acceptable acid addition salts have interesting analgesic and antidepressant properties. These substances can be manufactured according to various methods which are known per se and can be used as medicaments in the form of pharmaceutical preparation.
Asymmetrische Micheal-Additionen. Praktisch vollst�ndigdiastereo- und enantioselektive Alkylierungen des Enamins aus Cyclohexanon und Prolinylmethyl�ther.durch ?-Nitrostyrole zu u-2-(l?-Aryl-2?-nitro�thyl)cyclohexanonen
作者:Stefan J. Blarer、W. Bernd Schweizer、Dieter Seebach
DOI:10.1002/hlca.19820650537
日期:1982.7.28
Asymmetric Michael-Additions Practically Completely Diastereo- and Enantloselective Alkylations of the Enamine from Cyclohexanone and Prolinyl Methyl Ether by ω-Nitrostyrenes to Give u2-(1′-Aryl-2′-nitroethyl)cyclohexanones
Evidence for an enolate mechanism in the asymmetric Michael reaction of α,β-unsaturated aldehydes and ketones <i>via</i> a hybrid system of two secondary amine catalysts
neither an enamine nor an enol, but an enolate in the direct Michaelreaction of α,β-unsaturated aldehydes and non-activated ketones catalyzed by two amine catalysts namely diphenylprolinol silyl ether and pyrrolidine. This is a rare example of an enolate from a ketone serving as a key intermediate in the asymmetric organocatalytic reaction involving secondary amine catalysts because the ketone enolates