3 results about "Borane dimethylsulfide" patented technology

The invention discloses a tetra-coordinated boron-oxygen heterocyclic compound and a preparation method thereof, and belongs to the technical field of pharmaceutical and chemical intermediates and related chemistry. The method comprises the following steps: by taking a bis (pentafluorophenyl) borane dimethyl sulfide complex [(C6F5) 2BHSMe2] as a boron source, firstly carrying out hydroboronation reaction on the bis (pentafluorophenyl) borane dimethyl sulfide complex [(C6F5) 2BHSMe2] and an eneyne compound to generate a three-coordination alkenyl boron dienophile intermediate in situ, and then carrying out reverse electron demand Diels-Alder reaction on the three-coordination alkenyl boron dienophile intermediate and an acetylenic ketone compound to synthesize a series of tetra-coordination boron-oxygen heterocyclic compounds. The method has the advantages of mild reaction conditions, good selectivity, high yield, wide substrate application range, environmental friendliness, simplicity and convenience in operation and the like, opens up a new way for synthesis of the tetra-coordinated organoboron compound, and has higher application value and social and economic benefits.

This invention belongs to the field of chemical synthesis technology, specifically relating to a method for synthesizing 1-(7-amino-6-bromo-4,4-dimethyl-3,4-dihydroquinoline-1(2H)-yl)ethyl-1-one. Using compound A as a basic raw material, this invention obtains 1-(7-amino-6-bromo-4,4-dimethyl-3,4-dihydroquinoline-1(2H)-yl)ethyl-1-one through reactions such as reaction with borane dimethyl sulfide, nitration, and acetylation. This method is easy to operate and produces products with high yield and high purity.

The invention belongs to the technical field of material synthesis, and particularly relates to bis (tetramethylammonium dodecahydrododecaborate) as well as a synthesis method and application thereof. According to the synthesis method of the dodecahydrododecaborate bis (tetramethylammonium), expensive and difficult-to-obtain raw materials are not used, the dodecahydrododecaborate bis (tetramethylammonium) is synthesized through one-step reaction of tetramethyl ammonium borohydride (CH3) 4NBH4 and the borane dimethyl sulfide complex in the high-pressure reaction kettle, the reaction steps are simple, the yield is high, and the method is suitable for industrial production. According to the present invention, the dodecahydrododecaboronic acid bis (tetramethyl) ammonium synthesis process has characteristics of high yield and high purity, is an efficient dodecahydrododecaboronic acid bis (tetramethyl) ammonium synthesis process, is hopeful to provide the high-purity dodecahydrododecaboronic acid bis (tetramethyl) ammonium on a large scale, meets the application requirements of dodecahydrododecaboronic acid bis (tetramethyl) ammonium in a plurality of fields, and has wide application prospects. Therefore, the technical problem that an efficient synthesis process for dodecahydrododecaboronic acid bis (tetramethylammonium) is lacked at present is solved.