CAS: 62-56-6; Thiourea

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CAS号3129-90-6 硫氰酸 | CAS号2986-19-8 2-甲基-2-疏基硫酸脲 | CAS号82118-18-1 (5-NITRO-2-FURY...

羰基硫置于氨体系中,用 甲苯 作为反应溶剂,化学反应 1.0H,以94.18%的收率获得产物硫脲
参考文献:一种硫脲的合成方法
标题:一种硫脲的合成方法
摘要:本发明属于有机合成技术领域,具体涉及一种硫脲的合成方法.以羰基硫,与氨气为原料通入溶剂中,合成目标产物硫脲,也可加入适量催化剂促进反应进行,催化剂是氯化钙,分子筛中的一种.该发明操作步骤简单,能耗低,生产周期短,产品收率和纯度高,满足市场对硫脲的质量要求;原料易得且价格较低;反应无固废产生,具有很高的环保价值,适合工业化生产.

专利信息

专利号:US-11661406-B2
优先权日:2018-08-13
标 题 :Method for producing intermediate useful for synthesis of SGLT inhibitor
发明人：LI QING RI; YOON HEE KYOON
权利人:DAEWOONG PHARMACEUTICAL CO LTD
摘要:A method of preparing an intermediate useful for the synthesis of a diphenylmethane derivative that can be used as an SGLT inhibitor is described. A method of synthesizing a compound of Formula 7 can address problems of existing synthesis processes requiring the synthesis of the Grignard reagent and management of related substances. In addition, the method can minimize the generation of related substances, and thus does not require reprocessing of reaction products, thereby simplifying the process. Accordingly, the production yield of a diphenylmethane derivative can be maximized.

专利号:US-2025002654-A1
优先权日:2023-06-22
标 题:Methods and applications for synthesis of carbazole phosphazene based polymer and recovery of valuable metal elements from electronic waste materials
发明人：SADAK ALI ENIS; CUCU EVREN; ARI ENGIN BETUL; TUNC MURAT; ALTUNDAS RAMAZAN
权利人:TURKIYE BILIMSEL VE TEKNOLOJIK ARASTIRMA KURUMU
摘要:A synthesis method for carbazole phosphazene based polymer and a method for the recovery of precious metal elements from electronic waste materials are provided. The developed method allows for the efficient and cost-effective synthesis of carbazole phosphazene based polymer in a single step, with high yield and easy purification. In the method for the recovery of precious metal elements from electronic waste materials, a two-step metal leaching process is employed using solutions with different acidity levels, resulting in the high-efficiency recovery of precious metal elements. The carbazole phosphazene based polymer represented by Formula 2 exhibits high selectivity in the adsorption of precious metal elements, particularly gold. Therefore, it can be applied in the recovery of gold and other precious metals from electronic waste materials in the method for the recovery of precious metal elements.

专利号:US-2024309024-A1
优先权日:2023-03-14
标题 :Direct synthesis of alkenylhalosilanes
发明人：LEWIS KENRICK MARTIN; ZHU YANJUN; BYRNE CHRISTOPHER M
权利人:MOMENTIVE PERFORMANCE MAT INC
摘要:A process for the direct synthesis of alkenylhalosilane monomers. Forming a slurry of liquid and copper-activated silicon from fresh silicon, cyclone fines and/or fine dust from silicon grinding, ultrafines and/or spent contact mass from the Direct Synthesis of alkylhalosilanes and arylhalosilanes, in a thermally stable solvent. Reacting the silanes by agitating the slurry with at least one unsaturated aliphatic or cycloaliphatic organohalide of the formula R1X, and optionally an organohalosilane and/or hydrogen halide, in the presence of a polymerization inhibiting Lewis base additive, at a reaction time, temperature and pressure effective to produce alkenylhalosilanes having the formulae, R1SiHX2, R12SiHX, R13SiX, R1SiX3, and R12SiX2 or mixtures thereof.

专利号:US-11759760-B2
优先权日:2016-01-12
标题:Apparatus and process for the automated chemical synthesis of compounds
发明人：BODE JEFFREY WILLIAM; WANNER BENEDIKT MATTHIAS; CHEN KUANG-YEN; PATTABIRAMAN VIJAYA; NICHOLS PAULA LOUISE
权利人:ETH ZUERICH
摘要:Provided is an apparatus for the automated synthesis of at least one chemical compound including: at least one cartridge including at least one first compartment for providing at least one first reagent for the chemical synthesis of the at least one compound; at least one second compartment for providing at least one second reagent for the chemical synthesis of the at least one compound, and at least one third compartment for purifying the at least one synthesized compound; at least one reaction container for providing the compounds to be fed into at least one of the compartments of the cartridge and/or collecting the reaction product from at least one of the compartments of the cartridge; at least one solvent container at least two flow path selecting valves and at least one pump.

专利号:US-2022219156-A1
优先权日:2019-04-29
标题:Catalyst for the catalytic synthesis of urea
发明人：GLOTZBACH CHRISTOPH; TENHUMBERG NILS; EL HAWARY TAREK; MAKHYNYA YEVGENY; LEITNER WALTER; KLANKERMAYER JÃœRGEN; SCHUMACHER HANNAH
权利人:THYSSENKRUPP IND SOLUTIONS AG; THYSSENKRUPP AG
摘要:A ruthenium-phosphine complex can be used as a catalyst in a method for the catalytic synthesis of urea. The method may comprise more particularly a reaction of formamide or of formamide with ammonia in the presence of the catalyst to form urea and hydrogen. Through the use of the ruthenium-phosphine complex as the catalyst, catalytic preparation of urea from formamide or from formamide with ammonia is provided for the first time. This allows for synthesis under mild conditions and virtually no formation of byproducts. Further, using an acid as a cocatalyst in the catalytic synthesis or the reaction can lead to an improvement in urea yield.

专利号:US-8410320-B2
优先权日:2010-12-07
标 题 :Method for synthesis of secondary alcohols
发明人：CHENG CHIEN-HONG; KARTHIKEYAN JAGANATHAN; HUANG PANG-CHI
权利人:CHENG CHIEN-HONG; KARTHIKEYAN JAGANATHAN; HUANG PANG-CHI; NAT UNIV TSING HUA
摘要:A method for synthesis of secondary alcohols is provided for pharmaceutical secondary alcohol by addition of organoboronic acids with aldehydes in presence of the cobalt ion and bidentate ligands as the catalyst. In addition, an enantioselective synthesis method for secondary alcohols is also herein provided in the present invention. The present invention has advantages in using less expensive cobalt ion and commercially available chiral ligands as the catalyst, wide scope of organoboronic acids and aldehydes compatible with this catalytic reaction and achieving excellent yields and/or enantiomeric excess.