METHOD FOR ACYLATING HEXAKIS (ARYLMETHYL) HEXAAZAISOWURTZITANE
申请人:Asahi Kasei Kogyo Kabushiki Kaisha
公开号:EP1024141A1
公开(公告)日:2000-08-02
A method for acylating a hexakis(arylmethyl)hexaazaisowurtzitane (WB6) by reductive dearylmethylation in the presence of an acylating agent, which comprises contacting (a) a WB6 and (b) a heterogeneous reduction catalyst with each other in the presence of (c) an acylating agent and (d) a reducing agent in (e) a solvent for WB6 (a), thereby performing a reductive dearylmethylation/acylation reaction of WB6 (a), wherein there is no contact between WB6 (a) and heterogeneous reduction catalyst (b) in the absence of any of acylating agent (c) and reducing agent (d). The method of the present invention is commercially advantageous in that the decomposition of a hexaazaisowurtzitane skeleton, Which is likely to occur at the initial stage of the acylation reaction of a WB6 as a starting material, can be very effectively suppressed, so that desired tetraacylhexaazaisowurtzitane derivatives can be stably produced in high yield.
Novel Synthesis of 3-(9′-Acridinyl)-5-substituted Tetrahydro-1,3,5-thiadiazine-2-thiones from Isothiocyanates and 1-Azonium-4-azabicyclo[2.2.2]-octane Hydrogen Sulfide
Reaction of 9-isothiocyanatoacridines 3 with a new reagent 1-azonium-4-azabicyclo[2.2.2]-octane hydrogen sulfide 4 afforded in high yields pure dithiocarbamates 2 which reacted with amminium sulfate and formaldehyde to 3-(9'-acridinyl)-5-substituted tetrahydro-1,3,5-thiadiazine-2-thiones 5, 6.