Chemie polyfunktioneller Liganden, 67 [1]. Die Darstellung von 1.1.1-Tris(dichlorarsinomethyl)ethan, Ethan-1.1.1-tris(methylarsonsäure), 1.1.1- Tris (arsinomethyl )ethan und einem neuen Organocyclotriarsan / Chemistry of Polyfunctional Ligands, 67 [1] The Preparation of 1.1.1-Tris(dichloroarsinomethyl)ethane, Ethane-1.1.1-tris(methylarsonic acid), 1.1.1-Tris(arsinomethyl)ethane and of a New Organocyclotriarsane

Abstract

Abstract 1,1,1-Tris(dichlorarsinomethyl)ethane, CH 3 C(CH 2 AsCl 2 ) 3 (5) can be obtained in the reaction of CH 3 C(CH 2 AsNC 6 H 4 CH 3 ) 3 (4) with gaseous HCl. The heteroadamantane CH 3 C(CH 2 AsO) 3 (6) reacts with AsCl 3 or PCl 3 yielding also 5. CH 3 C(CH 2 AsO) 3 , CH 3 C(CH 2 AsS) 3 and CH 3 C(CH 2 AsI 2 ) 3 are oxidized with H 2 O 2 to give CH 3 C[CH 2 As(O)(OH) 2 ] 3 (7) and CH 3 C[CH 2 As(O)(OH) 2 ] 3 ·H 2 O (7 a). CH 3 C(CH 2 AsI 2 ) 3 and C(CH 2 AsI 2 ) 4 can be reduced with LiAlH 4 to give CH 3 C(CH 2 AsH 2 ) 3 (9) and C(CH 2 AsH 2 ) 4 (12). Oxidation of 9 and 12 leads to the cyclotriarsane compounds CH 3 C(CH 2 As) 3 (10) and H 2 AsCH 2 C(CH 2 As) 3 (13).