CAS: 55718-76-8; 2-Chlorobenzo[d][1,3,2]Dioxaborole

上下游产品

CAS号37737-62-5 O-亚苯基硼酸盐 | CAS号10294-34-5 三氯化硼 | CAS号120-80-9 邻苯二酚 | CAS号57100-59-1 Benzo-1,3-dioxa... | CAS号6255-58-9 1,3, 2-Benzodio... | CAS号3488-87-7 2-butoxy-1,3,2-... | CAS号75-09-2 二氯甲烷 | CAS号365564-11-0 N-TIPS-吡咯-3-硼酸频哪醇酯 | CAS号953040-54-5 1-甲基-3-(4,4,5,5... | CAS号850567-47-4 N-甲基吡咯-2-硼酸频哪醇酯 | CAS号1278579-60-4 1-METHYL-2,4-BI... | CAS号1461-22-9 三丁基氯化锡 | CAS号13826-27-2 双(邻苯二酚)二硼酸酯 | CAS号3488-87-7 2-butoxy-1,3,2-... | CAS号125928-78-1 N,N-diethyl-1,3... | CAS号75-15-0 二硫化碳 | CAS号46055-80-5 N,N'-dimethylam...

邻苯二酚置于二氯甲烷,三氯化硼体系中,化学反应生成 B-氯-1,2-苯二酚硼烷
参考文献:Gerrard Et Al.,Journal Of The Chemical Society,1959,P. 1529,1531,1533
标题:Gerrard Et Al.,Journal Of The Chemical Society,1959,P. 1529,1531,1533

专利信息

专利号:US-2004018598-A1
优先权日:2000-05-30
标题 :Bio-intermediates for use in the chemical synthesis of polyketides
发明人：SANTI DANIEL; ASHLEY GARY; MYLES DAVID C
摘要:The present invention relates to compounds made by a subset of modules from one or more polyketide synthase (“PKSâ€?) genes that are used as starting material in the chemical synthesis of novel molecules, particularly naturally occurring polyketides or derivatives thereof. The biologically derived intermediates (“bio-intermediatesâ€?) generally represent particularly difficult compounds to synthesize using traditional chemical approaches due to one or more stereocenters. In one aspect of the invention, an intermediate in the synthesis of epothilone is provided that feeds into the synthetic protocol of Danishefsky and co-workers. In another aspect of the invention, intermediates in the synthesis of discodermolide are provided that feed into the synthetic protocol of Smith and co-workers. By taking advantage of the inherent stereochemical specificity of biological processes, the syntheses of key intermediates and thus the overall syntheses of compounds like epothilone and discodermolide are greaty simplified.

专利号:US-2004132610-A1
优先权日:2003-01-03
标题:Transition metal complexes in the controlled synthesis of polyolefins substituted with functional groups
发明人：TAGGE CHRISTOPHER D; WILSON ROBERT B
摘要:A method is provided for the polymerization of olefins substituted with a functional group using a transition metal catalyst that, by virtue of one or more stabilizing groups incorporated within the catalyst structure, “fixesâ€? the stereoconfiguration of each olefinic monomer relative to the transition metal complex during each successive reaction in the polymerization process. The invention substantially reduces the likelihood of olefin rearrangement at the active site of the catalyst during polymerization. In one particular embodiment, the functional group is a polar, electron-donating group and the stabilizing group is a Lewis acid substituent; examples of polymers that can be prepared with such a system include poly(vinyl acetate), poly(vinyl alcohol), and poly(vinyl ethers). Novel complexes and catalyst systems useful in the polymerization method are also provided.

专利号:US-7968736-B2
优先权日:2002-09-06
标 题:Analogs of discodermolide and dictyostatin-1, intermediates therefor and methods of synthesis thereof
发明人：CURRAN DENNIS P; SHIN YOUSEUNG; CHOY NAKYEN; DAY BILLY W; BALACHANDRAN RAGHAVAN; MADIRAJU CHARITHA; TURNER TIFFANY
权利人:UNIV PITTSBURGH & MDASH OF THE COMMONWELTH SYSTEMS OF HIGHER EDUCATION
摘要:A compound of the following structure: n n n n n n n n n n wherein R 1 is H, an alkyl group, an aryl group, an alkenyl group, an alkynyl group, or a halogen atom; n R 2 is H, an alkyl group, an aryl group, a benzyl group, a trityl group, —SiR a R b R c , CH 2 OR d , or COR e ; n R a , R b and R c are independently an alkyl group or an aryl group; n R d is an alkyl group, an aryl group, an alkoxylalkyl group, —R i SiR a R b R c or a benzyl group, wherein R i is an alkylene group; n R e is an alkyl group, an allyl group, a benzyl group, an aryl group, an alkoxy group, or —NR g R h , wherein R g and R h are independently H, an alkyl group or an aryl group; n R 3 is (CH 2 ) n where n is and integer in the range of 0 to 5, —CH 2 CH(CH 3 )—, —CHâ•?CH—, —CHâ•?C(CH 3 )—, or —C≡C—; n R 4 n n n n n n n n n n n n  wherein y1 and y2 are 1 and y3, y4 and y5 are independently 0 or 1, R k1 , R k2 , R k3 , R k4 and R k5 are independently H, CH 3 , or OR 2a , and R s1 , R s2 , R s3 , and R s4 are independently H or CH 3 , wherein R 2a is H, an alkyl group, an aryl group, a benzyl group, a trityl group, —SiR a R b R c , CH 2 OR d , or COR e ; and n R 5 is H or OR 2b , wherein R 2b is H, an alkyl group, an aryl group, an aryl group,a benzyl group, a trityl group, —SiR a R b R c , CH 2 OR d , or COR e .

专利号:US-8101786-B2
优先权日:2006-02-08
标 题:Energy efficient synthesis of boranes
发明人：THORN DAVID L; TUMAS WILLIAM; SCHWARZ DANIEL E; BURRELL ANTHONY K
权利人:THORN DAVID L; TUMAS WILLIAM; SCHWARZ DANIEL E; BURRELL ANTHONY K; LOS ALAMOS NAT SECURITY LLC
摘要:The reaction of halo-boron compounds (B—X compounds, compounds having one or more boron-halogen bonds) with silanes provides boranes (B—H compounds, compounds having one or more B—H bonds) and halosilanes. Inorganic hydrides, such as surface-bound silane hydrides (Si—H) react with B—X compounds to form B—H compounds and surface-bound halosilanes. The surface bound halosilanes are converted back to surface-bound silanes electrochemically. Halo-boron compounds react with stannanes (tin compounds having a Sn—H bond) to form boranes and halostannanes (tin compounds having a Sn—X bond). The halostannanes are converted back to stannanes electrochemically or by the thermolysis of Sn-formate compounds. When the halo-boron compound is BCl 3 , the B—H compound is B 2 H 6 , and where the reducing potential is provided electrochemically or by the thermolysis of formate.

专利号:US-7037990-B2
优先权日:2003-01-03
标题 :Transition metal complexes in the controlled synthesis of polyolefins substituted with functional groups
发明人：TAGGE CHRISTOPHER D; WILSON JR ROBERT B; ONO HIROYUKI
权利人:NIPPON SYNTHETIC CHEMICAL COMP
摘要:A method is provided for the polymerization of olefins substituted with a functional group using a transition metal catalyst that, by virtue of one or more stabilizing groups incorporated within the catalyst structure, “fixesâ€? the stereoconfiguration of each olefinic monomer relative to the transition metal complex during each successive reaction in the polymerization process. The invention substantially reduces the likelihood of olefin rearrangement at the active site of the catalyst during polymerization. In one particular embodiment, the functional group is a polar, electron-donating group and the stabilizing group is a Lewis acid substituent; examples of polymers that can be prepared with such a system include poly(vinyl acetate), poly(vinyl alcohol), and poly(vinyl ethers). Novel complexes and catalyst systems useful in the polymerization method are also provided.

专利号:US-2004132936-A1
优先权日:2003-01-03
标 题:Transition metal complexes in the controlled synthesis of polyolefins substituted with functional groups