Yamaguchi, Akihiro; Okazaki, Mitsuo published the artcile< Preparation of p-nitrostilbene derivatives by the modified Wittig reaction>, Application of C19H34O2, the main research area is Wittig reaction nitro stilbenes; stilbenes nitro Wittig reaction; nitro stilbenes Wittig reaction; trialkyl phosphite benzyl halide; phosphite trialkyl benzyl halide; benzyl halide trialkyl phosphite.
PhCH2Cl (70 g) and 100 g (EtO)3P (I) heated at 150-70° for 18 hr gave 107 g PhCH2PO(OEt)2 (II), b25 171-5°. Treating 46.0 g II with a mixture of 75 ml HNO3 (d. = 1.38) and 75 ml H2SO4 at -3 to 0° gave 0.58:1 o-O2NC6H4CH2P(OEt)2 (III)-p-NO2 isomer (IV). Nitration of I with fuming HNO3 yielded 0.2:98.2 III-IV. Treating p-O2NC6H4CH2Br and o-O2NC6H4CH2Br with I gave pure IV, b3 199-201°, n20D 1.5212, and III, b1 167-8°, n20D 1.5082, resp. III (2.7 g) treated with 0.35 g Na in 20 ml EtOH and then with p-O2NC6H4CHO gave 95.2% p-O2NC6H4CH:CHC6H4NO2-p, m. 295-6°. Similarly the following p-O2NC6H4CH:CHC6H4R-p were prepared (R, % yield, and m.p. given): CN, 96.8, 255-6°; CO2H, 65.5, 333-4°; Cl, 92.3, 186-7°; Br, 93.1, 201-1.5; H, 94.2, 156.5-7.5°; Me, 80.8, 150-50.5°; MeO, 92.5, 131-2°; Me2N, 85.5, 252°; AcNH, 90.4, 256-7°. Similarly p-O2NC6H4CH:CHC6H3(NO2)2-2,4, m. 142.5-43°, was prepared in 80.3% yield.
Nippon Kagaku Zasshi published new progress about 112-63-0. 112-63-0 belongs to class esters-buliding-blocks, and the molecular formula is C19H34O2, Application of C19H34O2.
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics