METHOD FOR PRODUCTION OF SUBSTITUTED BENZALDEHYDE

摘要

PCT No. PCT/JP85/00628 Sec. 371 Date Nov. 11, 1985 Sec. 102(e) Date Nov. 11, 1985 PCT Filed Nov. 11, 1985 PCT Pub. No. WO86/06715 PCT Pub. Date Nov. 20, 1986.From a methoxy-, tertiary butyl-, or phenoxy-substituted toluene, a corresponding substituted benzaldehyde is obtained by the catalytic gas-phase oxidation of the substituted toluene with a molecular oxygen-containing gas in the presence of a catalyst composition represented by the formula, VaXbYcOd, wherein X stands for at least one element from among Na, K, Rb, Cs, and Tl (with the exception of a case wherein K is used alone), Y for at least one element from among Mg, Ca, Sr, Ba, Nb, Ta, P, Sb, Bi, Cu, Ag, Ti, Fe, Co, Ni, Sn, Ce, and Zn, and a, b, c, and d jointly represent an atomic ratio of the relevant elements.