Sodium selenite enhances the catalytic activity of molybdenum(VI) oxide during the reduction of nitroarenes (XC 6 H 4 NO 2 , X = 4-CN, 4-CO 2 Et, H, 4-C1, 2-Me, 3-Me, 4-Me, 4-OMe) with sodium borohydride to arenamines (86–98 % yields) under mild conditions. ... X= 4-CN, 4-CO 2 Et, H, 4-Cl, 2-Me, 3-Me, 4-Me, 4-OMe in 86–98 % yields. ... Tetrahedron Lett., 31 (1990), p. 4065 Comprehensive organic transformations: a guide to functional group preparations, ...