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Group 13 sulfides hydrazine derivatives

The chloromethylpyrimido[5,4-( ]-l,2,4-triazine 86 is an extremely versatile starting material (see Section 10.20.7.2, Equation 12) and was synthesized from the commercially available thiol 151 as shown in Scheme 25. Thus, 6 -methylation of compound 151 gave the sulfide 152, which was nitrosated to allow access to the nitroso-thiomethyl derivative 153. Nucleophilic substitution of the thiomethyl group by hydrazine gave the cyclization precursor 154, which underwent cyclization with chloroacetaldehyde diethyl acetal under acidic conditions to give the chloro-methylpyrimido[5,4-( ]-l,2,4-triazine 86 after workup with aqueous ammonia <2003BML2895>. [Pg.1299]


See other pages where Group 13 sulfides hydrazine derivatives is mentioned: [Pg.95]    [Pg.127]    [Pg.117]    [Pg.25]    [Pg.387]    [Pg.158]    [Pg.73]    [Pg.367]    [Pg.25]    [Pg.173]    [Pg.102]    [Pg.483]    [Pg.25]    [Pg.629]    [Pg.204]    [Pg.1817]    [Pg.629]    [Pg.462]    [Pg.483]    [Pg.557]    [Pg.104]   
See also in sourсe #XX -- [ Pg.459 ]




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Derived group

Group 13 sulfides hydrazine

Group sulfides

Hydrazin derivative

Hydrazine derivatives

Sulfide derivatives

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