CAS: 1072-53-3; 1,3,2-Dioxathiolane 2,2-Dioxide

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1006381-03-8 174953-30-1 5689-83-8

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CAS号3741-38-6 亚硫酸乙烯酯 | CAS号54509-73-8 ethene | CAS号75-21-8 环氧乙烷 | CAS号106-93-4 1,2-二溴乙烷 | CAS号107-21-1 乙二醇 | CAS号5020-41-7 2-(3-甲氧基苯基)乙醇 | CAS号493-09-4 1,4-苯并二噁烷 | CAS号926-39-6 2-氨基乙醇硫酸氢酯 | CAS号194724-89-5 3-(4-methoxyphe... | CAS号5402-55-1 2-噻吩乙醇 | CAS号7417-18-7 1-(2-甲氧基苯基)乙醇 | CAS号624-76-0 2-碘-1-乙醇 | CAS号2240-88-2 3,3,3-三氟丙-1-醇 | CAS号13781-67-4 2-(3-噻吩基)乙醇 | CAS号30962-69-7 2-苯并[b]噻吩-2-乙醇

乙二醇置于氢氧化钾,磺酰氯,Silica Gel体系中,化学反应生成1,3,2-二噁唑噻吩-2,2-二氧化物
参考文献:高价硅中心介导的高产率合成环状亚磷酸酯,磷酸盐,亚硫酸盐和邻苯二酚和乙二醇的硫酸盐
标题:高价硅中心介导的高产率合成环状亚磷酸酯,磷酸盐,亚硫酸盐和邻苯二酚和乙二醇的硫酸盐
摘要:均三(邻苯二酚)硅酸盐m 2 [si(oc 6 H 4 O 2)3 ] M = Na,Et 3 Nh和甘醇硅酸盐k 2 [si 2(o 2 C 2 H 4)5 ]与pcl 3一起,Pocl 3,Socl 2和so 2 Cl 2放热进行,并容易分离出相应的邻苯二酚/乙二醇环状衍生物(1-8)以高收率,证明了高价硅中心在合成中的优点.(et 3 Nh)2 [si(oc 6 H 4 O 2)3 ]提供接近定量的转化率.
Doi:10.1016/s0040-4039(97)01020-4

专利信息

专利号:US-2024182439-A1
优先权日:2022-11-23
标题 :Method for catalytic synthesis of crude ethylene sulfate
发明人：REN FAN; WANG LIANG; SONG WENCHAO; Dai Rongming; LIANG LICHUN; Cui Xianmiao
权利人:Wuhan Oxiran Special Chemicals Company
摘要:In method for catalytic synthesis of crude ethylene sulfate, a sulfur trioxide solution is prepared by dissolving sulfur trioxide with a solution A, an ethylene oxide solution is prepared by mixing a solution B with ethylene oxide, a catalyst is added to the sulfur trioxide solution and mixing them to obtain a mixed solution C, the ethylene oxide solution and the mixed solution C are pre-cooled, and then introduced into a set of microchannel reactors for a real-time reaction to obtain a mixed solution containing crude ethylene sulfate, and then a post-treatment process is carried out to obtain crude ethylene sulfate. With the process, the reaction selectivity is good, and a microchannel reaction can accurately control the reaction energy level due to its rapid mixing and timely heat transfer, which greatly reduces the safety risk and effectively avoids the occurrence of side reactions.

专利号:US-12077484-B2
优先权日:2019-12-23
标 题 :Process for the synthesis of melphalan
发明人：ALLEGRINI PIETRO; BONETTI ANDREA; MOLINARI MARCO; GAMBINI ANDREA
权利人:INDENA SPA
摘要:The invention relates to a process for the preparation of Melphalan (4-[bis(2-chloroethyl)amino]-L-phenylalanine of formula (I)said process comprising the reaction of a 4-amino-L-phenylalanine protected at the carboxy and amino aminoacidic groups with an agent able to convert the aromatic amino group into a group of formula: —N(CH2CH2OS(O)nO−)2, wherein n is 1 or 2 followed by conversion of the —N(CH2CH2OS(O)nO−)2 group into a —N(CH2CH2Cl)2 group.The invention also provides novel intermediates useful for the preparation of Melphalan.

专利号:US-6277982-B1
优先权日:1999-08-20
标题:Alkylation of alcohols, amines, thiols and their derivatives by cyclic sulfate intermediates
发明人：FRASER ALLISTER S; MANOHARAN MUTHIAH; COOK PHILLIP DAN; JUNG MICHAEL E; KAWASAKI ANDREW M
权利人:ISIS PHARMACEUTICALS INC
摘要:Methods for the alkylation of alcohols, amines and thiols by the use of cyclic sulfates are disclosed. The alkylated sulfates formed are versatile intermediates which may be further elaborated by methods of the invention. In particular, methods for the alkylation of the 2′, 3′ or 5′-hydroxy position of nucleosides and nucleoside analogs with cyclic sulfates to form the 2′, 3′ or 5′-O-alkyl sulfate modified compounds are disclosed. Displacement of the 2′,3′ or 5′-O-sulfate with a nucleophile provides 2′, 3′ or 5′-O-modified nucleosides and nucleoside analogs useful for the synthesis of oligomeric compounds having improved hybridization affinity and nuclease resistance.

专利号:US-2024150918-A1
优先权日:2021-02-22
标 题:Improved Electrochemical Ammonia Synthesis
发明人：ANDERSEN SUZANNE ZAMANY; LI KATJA; BUKAS VANESSA JANE; SACCOCCIO MATTIA; KREMPL KEVIN; KIBSGAARD JAKOB; VESBORG PETER CHRISTIAN KJAERGAARD; CHAKRABORTY DEBASHISH; NØRSKOV JENS KEHLET; CHORKENDORFF IB; STATT MICHAEL; PEDERSEN JAKOB BRUUN; SAZINAS ROKAS
权利人:UNIV DANMARKS TEKNISKE; UNIV LELAND STANFORD JUNIOR
摘要:The invention regards a method for electrochemical ammonia synthesis, comprising the steps of: —providing an electrolysis cell having a cathode, —contracting the cathode with a source of cations preferably lithium cations, a source of nitrogen a source of oxygen, and a source of protons, wherein the oxygen source provides a predefined oxygen concentration, and —subjecting the cell to a potential and current load, whereby ammonia is synthesized.

专利号:US-2023086549-A1
优先权日:2020-03-05
标 题:Electrochemical ammonia synthesis
发明人：ANDERSEN SUZANNE ZAMANY; CHORKENDORFF IB; CHAKRABORTY DEBASHISH; VESBORG PETER CHRISTIAN KJAERGAARD; KIBSGAARD JAKOB; NØRSKOV JENS KEHLET; BUKAS VANESSA JANE
权利人:UNIV DANMARKS TEKNISKE
摘要:The invention regards a method for electrochemical ammonia synthesis, comprising the steps of: providing at least one electrolysis cell; contacting the cathode with a source of lithium cations, nitrogen, and protons; and subjecting the cathode to a continuous pulsed cathode potential, including a pulsed cathodic current load, wherein the cathode potential is pulsed between the lithium reduction potential and a less negative cathode potential, whereby ammonia is synthesized.

专利号:US-12221429-B2
优先权日:2022-11-01
标 题:Method for synthesizing 1,3,2-dioxathiolane 2,2-dioxide by in-situ catalytic oxidation
发明人：LIU QIKUI; ZHANG XIAOMENG
权利人:UNIV SHANDONG
摘要:Disclosed is a method for synthesizing 1,3,2-dioxathiolane 2,2-dioxide (DTD) by in-situ catalytic oxidation. A titanium silicon (TS)-1 molecular sieve is modified with a Pd salt and an Au salt to obtain an Au—Pd/TS-1 molecular sieve, which catalyzes oxygen and hydrogen to form hydrogen peroxide, and oxidizes glycol sulfite in situ in a reactor to synthesize DTD. An Au—Pd/TS-1 molecular sieve catalyst prepared by the present disclosure, which has two catalytic activities of catalytic synthesis of hydrogen peroxide and catalytic oxidation of sulfite, can significantly increase the reaction rate, enable the complete conversion of raw materials in a shorter residence time, and effectively inhibit the hydrolysis of products, and a high-purity DTD product can be obtained by washing and evaporatively crystallizing an organic phase.