CAS: 7757-83-7; Sodium Sulfite

上下游产品

CAS号7757-82-6 元明粉 | CAS号7446-09-5 二氧化硫 | CAS号497-19-8 纯碱 | CAS号7664-41-7 氨 | CAS号7647-14-5 氯化钠 | CAS号13472-44-1 trithi°Carbonic... | CAS号144-55-8 碳酸氢钠 | CAS号7440-23-5 钠标准溶液 | CAS号124-38-9 二氧化碳 | CAS号3542-44-7 3-羟基-1-丙磺酸 钠盐 | CAS号354-08-5 二氟溴乙酸 | CAS号3217-15-0 2,6-二氯-4-溴苯酚 | CAS号4979-32-2 促进剂DZ(DCBS) | CAS号88-46-0 2,5-dihydroxybe... | CAS号123-31-9 对苯二酚 | CAS号14970-71-9 sodium dithionate | CAS号423-60-9 全氟辛烷磺酰氯 | CAS号917-61-3 氰酸钠 | CAS号773837-37-9 sodium cyanide

专利信息

专利号:US-2013281742-A1
优先权日:2011-01-03
标题:Method and synthesis of initiators for telechelic polyisobutylenes
发明人：KENNEDY JOSEPH P; ERDODI GABOR
权利人:KENNEDY JOSEPH P; ERDODI GABOR; UNIV AKRON
摘要:A new methodology for the synthesis of a novel difunctional- and a known trifunctional initiator, i.e., 1,3-di(2-methoxy-2-propyl)-5-isopropyl benzene and 1,3,5-tri(2-methoxy-2-propyl)benzene, respectively, for the preparation of di- and tri-telechelic polyisobutylenes. The synthesis proceeds in three steps: 1) catalytic peroxidation of 1,3,5-triisopropylbenzene, 2) reduction of the peroxides to the corresponding alcohols, and 3) methylation of the alcohols. By controlling the conversion of the key peroxidation step the relative ratio of di- and tri-functional intermediates can be controlled. By the use of the 1,3-di(2-methoxy-2-propyl)-5-isopropyl-benzene, well-defined di-methoxy telechelic polyisobutylenes can be synthesized. Although the overall combined yield of the two initiators was only 14-20%, because of the low cost of the starting material, reagents used, and simple manipulations these compounds represent the most cost effective initiators to-date for the preparation of telechelic polyisobutylenes.

专利号:US-9212118-B2
优先权日:2010-12-23
标题:Synthesis of intermediates for preparing anacetrapib and derivatives thereof
发明人：HUMLJAN JAN; MARAS NENAD
权利人:HUMLJAN JAN; MARAS NENAD; LEK PHARMACEUTICALS
摘要:The present invention relates to the field of organic chemistry, more specifically to the synthesis of intermediate compounds which can be used in the synthesis of pharmaceutically active agents such as anacetrapib or derivatives thereof.

专利号:US-10173993-B2
优先权日:2015-12-09
标题 :Process for the synthesis of sulfones and sulfonamides
发明人：VON WOLFF NIKLAS; CHAR JOËLLE; CANTAT THIBAULT
权利人:COMMISSARIAT ENERGIE ATOMIQUE
摘要:A one pot single step process is described for the synthesis of a compound, including a labeled compound, containing a sulfonyl functional group comprising the step of mixing together a silane, an SO 2 source, an electrophilic compound, an activating compound and optionally a metal catalyst. A process for producing tracers from a labeled sulfonyl containing compound prepared by the described process is also included.

专利号:US-6887887-B2
优先权日:2001-03-19
标 题:Asymmetric synthesis of (S,S,R)-(-)-actinonin and its analogs and uses therefor
发明人：BORNMANN WILLIAM G; SIROTNAK FRANCIS; SCHER HOWARD; VIDAL EPHRAIM; BORELLA CHRISTOPHER; SCHEINBERG DAVID
权利人:SLOAN KETTERING INST CANCER
摘要:The present invention provides methods for the asymmetric synthesis of (S,S,R)-(−)-actinonin and its analogs and the compounds thereby synthesized having a structural formula: n n nwhere R 1 is an optionally substituted or halogenated alkyl, aryl, heteroalkyl or heteroaryl amine, said R 1 further comprising a cyclic or bicyclic structure; R 2 is methyl, CH 2 CH 3 , (CH 2 ) 2 CH 3 , C(CH 3 ) 3 , phenyl, 3,4-dichlorophenyl, biphenyl, benzyl, 4-hydroxybenzyl, piperidine, N-Boc-4-piperidine, CH 2 -(N-Boc-4-piperidine), 4-tetrahydropyran, CH 2 -4-tetrahydropyran, 3-methyl indolyl, 2-naphthyl, 3-pyridyl, 4-pyridyl, 3-thienyl; R 3 is R 2 or C 3-8 alkyl, R 4 is C 1-3 alkyl; and R 5 is NH 2 , OH, NHOH, NHOCH 3 , N(CH 3 )OH, N(CH 3 )OCH 3 , NHCH 2 CH 3 , NH(CH 2 CH 3 ), NHCH 2 (2,4-(OCH3) 2 Ph, NHCH 2 (4-NO 2 )Ph, NHN(CH 3 ) 2 , proline, or 2-hydroxymethyl pyrrolidine. Additionally, a method for the treatment of a neoplastic disease or for the inhibition of tumor cell growth each comprising the step of administering to an individual in need of such treatment a pharmacologically effective dose of the compounds of the present invention are provided.

专利号:US-11008285-B2
优先权日:2017-03-27
标 题 :Process for synthesis of mesotrione
发明人：GHARDA KEKI HORMUSJI; MATHUR SUCHET SARAN; JAIN NANDKUMAR JANARDAN; SATHE SHEKHAR VISHWANATH; DAMANIA PRAGNESH DALPATRAM
权利人:GHARDA CHEMICALS LTD
摘要:The present disclosure relates to a process for synthesis of mesotrione. The process comprises reacting 4-toluene sulfonyl chloride with alkali metal sulphite and alkali metal bicarbonate to obtain alkali metal toluene-4-sulfinate. The alkali metal toluene-4-sulfinate is reacted with alkali metal salt of monochloroacetic acid to obtain 4-methylsulfonyl toluene. Further, 4-methylsulfonyl toluene is nitrated to obtain 2-nitro-4-methylsulfonyl toluene. 2-nitro-4-methylsulfonyl toluene is oxidized and then halogenated to obtain 2-nitro-4-methylsulfonylbenzoyl halide. 2-nitro-4-methylsulfonylbenzoyl halide is reacted with alkali metal salt of 1,3-cyclohexanedione to obtain 3-(2-Nitro-4-methylsulfonylbenzoyloxy)cyclohexen-1-one which is reacted with base, a third fluid medium and cyanide ion source to obtain an amorphous mesotrione. The present disclosure also discloses the steps of converting the amorphous mesotrione to crystalline mesotrione having purity greater than 99%. The process of the present disclosure for preparing mesotrione is rapid, economic, and environment friendly.

专利号:US-5039814-A
优先权日:1990-05-02
标 题:Ortho-lithiation process for the synthesis of 2-substituted 1-(tetrazol-5-yl)benzenes
发明人：SHUMAN RICHARD F; KING ANTHONY O; ANDERSON ROBERT K
权利人:MERCK & CO INC
摘要:A process utilizes the tetrazole functional group to direct lithiation at the ortho position of a phenyltetrazole and generate a nucleophilic aryllithium species which then undergoes reaction with an electrophile to generate a 2-substituted 1-(tetrazol-5-yl)benzene. The process is useful in the production of intermediates in the synthesis of angiotensin II antagonists. This novel process is a more cost effective and versatile route for the large-scale preparation of these key intermediates.