35results about How to "Suitable for synthesis" patented technology

The invention relates to synthesis of methyl benzoate, in particular to a synthesis method of methyl benzoate by carbonylation of bromobenzene catalyzed by non-noble metal through photochemical catalysis under mild condition. The method adopts the technical proposal comprising the following steps: filling 0.10-0.15 Mpa CO into a solution consisting of 50-200 mmol / L of bromobenzene, 5-20 mmol / L ofCo(OAc)2 or CoCl2 as a catalyst and 100-1,000 mmol / l of alkali additive NaOCH3 or NaOAc, irradiating the solution by a 100-400W high voltage mercury lamp for 1-5 hours, and reacting at a temperature of between 15 and 25 DEG C. Preferably the methanol solution consisting of 50-200 mmol / L of bromobenzene, 5-20 mmol / L of Co(OAc)2 or CoCl2 as a catalyst and 100-1,000 mmol / l of alkali additive NaOCH3 or NaOAc is further added with 50-500 mmol / L of hypnone or benzophenone. The synthesis method has mild reaction condition, catalyzes reaction by simple non-noble metal salt, directly functionalizes bromobenzene, has high yield and selectivity (both can reach 91 percent) of the methyl benzoate, and is suitable for small scale production of methyl benzoate with high added value.

The invention relates to a method for preparing methyl-carboxylate by photo-promoted carbonylation reaction of chloro alkane on the moderate condition of non-noble metal catalysis, under the catalysis of non-noble metal catalyst cadmium, making chloro alkane and CO or CO2 perform photo- promoted carbonylation reaction in the methanol to produce the methyl-carboxylate which increases one C as compared with the chloro alkane, where the chloro alkane in the reaction is chloro cyclohexane and / or 1-chloro octane; the catalyst is selected from (a) 4-20mmol / L CdI2, (b) combination of 5-20mmol / L CdCl2 and 4-20mmol / L NaI, or (c) combination of 5-20mmol / L Cd(NO3)2 and 4-20mmol / L NaI. And it adopts non-noble metal compound as catalyst and uses chloro alkane as substrate; and the reacting condition is moderate, the cost is low, and it is suitable for small-scale and high-added value methyl-carboxylate synthesis.