J. Vicente, J. Abad, Antonia Sandoval
Aug 4, 1992
Citations
0
Influential Citations
14
Citations
Journal
Journal of Organometallic Chemistry
Abstract
Abstract The mercuriation of 3,4,5-trimethoxybenzoic acid has been re-investigated and the product [HgCl{C 6 H(CO 2 H)-6-(OMe) 3 -2,3,4}] ( 1 ) characterized. It is deprotonated by Na 2 CO 3 to give [Hg{C 6 H(CO 2 )-6-(OMe) 3 -2,3,4}] n ( 2 ) which, in turn, reacts with benzyltriphenylphosphonium chloride or triphenylphosphine to give [PPh 3 (CH 2 Ph)][HgCl{C 6 H(CO 2 )-6-(OMe) 3 -2,3,4}]( 3 ) or [Hg{C 6 H(CO 2 )-6-(OMe) 3 -2,3,4}(PPh 3 )] ( 4 ), respectively. The reaction of 2 with MeI in the presence of [NMe 4 ]Cl affords [Hg{C 6 H(CO 2 Me)-6-(OMe) 3 -2,3,4} 2 ] ( 5 ), which reacts with HgCl 2 or HgCl 2 to give [HgX{C 6 H(CO 2 Me)-6-(OMe) 3 -2,3,4}] [X Cl ( 6 ), I ( 7 )]. The crystal structure of 3 shows a linear geometry at the mercury atom [ClHgC 178.0(2)°, HgCl 2.315(2), HgC 2.060(5) A], with an additional long Hg⋯O contact [2.573(4) A].