CAS: 2033-24-1; 2,2-Dimethyl-1,3-Dioxane-4,6-Dione

相似化合物

3709-18-0 15568-97-5 2033-24-1

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6,6-二甲基-5,7-二氧杂-1,2-二氮杂螺[2.5]辛-1-烯-4,8-二酮置于二苯甲酮体系中,用 甲醇 用作溶剂,以93%的收率获得丙二酸环(亚)异丙酯
参考文献:重氮羰基化合物的化学:Xxvii.1,3-二恶烷-4,6-二酮衍生物二嗪类的热解和光解
标题:重氮羰基化合物的化学:Xxvii.1,3-二恶烷-4,6-二酮衍生物二嗪类的热解和光解
摘要:Photolysis Of Diazirines,1,3-Dioxane-4,6-Dione Derivatives,occurs In The Presence Of Methanol Or Dimethyl Sulfide As Carbene Traps Without A Formation Of Carbene Intermediates. It Was Established For The First Time That The Thermolysis And Photolysis Of Diazirines From The 1,3-Dioxane-4,6-Dione Series Led Mainly To Wolff Rearrangement With A Subsequent Formation Of 5-Oxo-1,3-Dioxolane-4-Carboxylic Acids Or Their Derivatives. The Data Obtained Show That The Alpha-Oxodiazirines Are The Key Intermediates In The Photolysis And Wolff Rearrangement Of Alpha-Diazocarbonyl Compounds.
Doi:10.1134/s1070428006080197

专利信息

专利号:US-2007259917-A1
优先权日:2006-04-24
标题 :Processes for the synthesis of 3-isobutylglutaric acid
发明人：KANSAL VINOD K; CHAURASIA BRIJNATH P; PATEL HITESH K; SHELKE SHIVAJI H; MORE YOGESH P
权利人:KANSAL VINOD K; CHAURASIA BRIJNATH P; PATEL HITESH K; SHELKE SHIVAJI H; MORE YOGESH P
摘要:Provided are processes for the synthesis of 3-isobutylglutaric acid, an intermediate in the synthesis of (S)-Pregabalin.

专利号:US-4287123-A
优先权日:1980-01-14
标题 :Synthesis of thienamycin via (3SR, 4RS)-3-((RS)-1-acyloxyethyl)-2-oxo-4-azetidineacetate
发明人：LIU THOMAS M H; MELILLO DAVID G; RYAN KENNETH M; SHINKAI ICHIRO; SLETZINGER MEYER
权利人:MERCK & CO INC
摘要:Disclosed is a process for the stereocontrolled total synthesis of thienamycin, which synthesis proceeds via intermediate II: II wherein R is a readily removable carboxyl protecting group; and is a readily removable acyl group.

专利号:US-10392361-B2
优先权日:2016-01-21
标题:Process for the synthesis of intermediates of Nebivolol
发明人：BARTOLI SANDRA; MANNUCCI SERENA; GRISELLI ALESSIO; STEFANINI ALESSIO
权利人:MENARINI INT OPERATIONS LUXEMBOURG SA
摘要:The present invention relates to a novel process for the synthesis of the intermediate compounds constituted by chromanyl haloketones of formula III and 6-fluoro-2-(oxiran-2-yl)chromans of formula I. n The intermediates thus obtained can be used for the synthesis of Nebivolol.

专利号:US-11840544-B2
优先权日:2018-07-02
标 题 :Intermediates in the synthesis of C3-substituted cephalosporins
发明人：MADELA KAROLINA
权利人:NORBROOK LAB LTD
摘要:Disclosed herein are novel and inventive methods for preparing intermediates in the synthesis of C3-substituted cephalosporins. One preferred C3-substituted cephalosporin of clinical interest is Cefovecin. Accordingly, the present invention provides for methods of preparing reactive halogen intermediates for use in the synthesis of C3-substituted cephalosporins, such as Cefovecin. In the case of Cefovecin the reactive intermediates are of the formula:

专利号:US-4269772-A
优先权日:1980-01-14
标 题 :Synthesis of thienamycin via trans-3-carboxymethylene-4-carboxy-5-methyl-Δ2 -isoxazoline
发明人：MELILLO DAVID G; RYAN KENNETH M
权利人:MERCK & CO INC
摘要:Disclosed is a process for the stereocontrolled total synthesis of thienamycin, which synthesis proceeds via intermediate II: II wherein R5 and R6 are removable protecting groups.

专利号:US-11459549-B2
优先权日:2018-05-10
标 题:Method for biocatalytic synthesis of Sitagliptin and intermediate thereof
发明人：WU FAHAO; YANG WEN; LI GANG; SHI HONGWEI; GAO YANGZHE; LIU LILI; YUAN ZHIFA
权利人:CHINA FORTUNE WAY COMPANY; NANJING REDWOOD FINE CHEMICAL CO LTD
摘要:Provided is a method for biocatalytic synthesis of Sitagliptin and intermediates thereof, in particular, provided are compounds of Formula (I) and Formula (II), or pharmaceutically acceptable salts thereof, a polypeptide capable of catalyzing conversion of a compound of Formula (I) to a compound of Formula (II), a nucleic acid encoding the polypeptide, a vector and a cell comprising the nucleic acid. In addition, also provided are a method for producing a compound of Formula (II) and Sitagliptin by using the polypeptide and the compound of Formula (I), and a method for preparing the polypeptide.