H2; CO in benzene-d6 byproducts: 2-hexenes; High Pressure; React. in a high-pressure react. vessel with CO/H2 (1200 psi), stirring (18 h), recharging with CO/H2 (900 psi), heating (1.75 h, 67°C).; Monitored by (1)H-NMR and GC.;

H2; CO in benzene-d6 byproducts: 2-hexenes; High Pressure; React. in a high-pressure react. vessel with CO/H2 (1200 psi), stirring (18 h), recharging with CO/H2 (900 psi), heating (1.75 h, 67°C).; Monitored by (1)H-NMR and GC.;