CAS: 791-28-6; Triphenylphosphine Oxide

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CAS号2526-64-9 三苯基二氯化膦 | CAS号108-86-1 溴苯 | CAS号4559-70-0 二苯基磷氧 | CAS号875781-17-2 5-溴-1H-吡唑并[3,4-b]吡啶 | CAS号723281-55-8 3-(吗啉-4-羰基)苯基硼酸 | CAS号719-80-2 二苯基乙氧基膦 | CAS号88284-48-4 2-(三甲基硅)苯基三氟甲烷磺酸盐 | CAS号613-45-6 2,4-二甲氧基苯甲醛 | CAS号452296-51-4 (Z)-3-(4-bromop... | CAS号197959-80-1 3-(5-bromo-2-me... | CAS号1056-25-3 N-(triphenyl-λ5... | CAS号4559-70-0 二苯基磷氧 | CAS号603-35-0 三苯基膦 | CAS号829-85-6 二苯基膦 | CAS号45586-50-3 oxo(phenyl)phosphane | CAS号71-43-2 苯 | CAS号945-51-7 二苯基亚砜 | CAS号77096-69-6 2-methyldibenzo... | CAS号6840-28-4 二苯基(对甲苯基)氧化膦

4-甲氧基苄基三苯基膦溴化盐置于potassium Tert-Butylate体系中,用 甲苯 作为反应溶剂,化学反应生成 三苯基氧化膦
参考文献:丙内酯与磷的缩合缩合:α,β-乙烯酮的便捷合成
标题:丙内酯与磷的缩合缩合:α,β-乙烯酮的便捷合成
摘要:通过丙内酯与乙炔的缩合反应获得δ-羟基-β-酮基膦酸酯,加热后得到α,β-不饱和酮.
DOI:10.1039/c39890001464

专利信息

专利号:US-6504041-B2
优先权日:1996-11-15
标题 :Synthesis of ruthenium or osmium metathesis catalysts
发明人：GRUBBS ROBERT H; BELDERRAIN TOMAS R; BROWN SETH N; WILHELM THOMAS E
权利人:CALIFORNIA INST OF TECHN
摘要:The present invention relates to the synthesis of highly active ruthenium and osmium carbene metathesis catalyst in good yield from readily available starting materials. The catalysts that may be synthesized are of the general formula n wherein: n M is ruthenium or osmium; n X and X 1 are independently any anionic ligand; n L and L 1 are any neutral electron donor ligand; and, n R and R 1 are each hydrogen or one of the following substituent groups: C 2 -C 20 alkenyl, C 2 -C 20 alkynyl, C 1 -C 20 alkyl, aryl, C 1 -C 20 carboxylate, C 1 -C 20 alkoxy, C 2 -C 20 alkenyloxy, C 2 -C 20 alkynyloxy, aryloxy, C 2 -C 20 alkoxycarbonyl, C 1 -C 20 alkylthio, C 1 -C 20 alkylsulfonyl and C 1 -C 20 alkylsulfinyl. Optionally, the substituent group may be substituted with one or more groups selected from C 1 -C 5 alkyl, halogen, C 1 -C 5 alkoxy, and aryl. When the substitute aryl group is phenyl, it may be further substituted with one or more groups selected from a halogen, a C 1 -C 5 alkyl, or a C 1 -C 5 alkoxy. Specific synthetic protocols for vinyl alkylidene catalysts wherein R is hydrogen and R 1 is —CHCR 12 R 13 and non-vinyl alkylidene catalysts are also disclosed. In addition to the ease of synthesis (typically a one-step synthesis), the reactions generally may be run at or above room temperature and the resulting products usually may be used without extensive post synthesis purification.

专利号:US-7247752-B2
优先权日:2004-10-01
标 题 :Methods for the synthesis of astaxanthin
发明人：LOCKWOOD SAMUEL F; TANG PENG CHO; NADOLSKI GEOFF; JACKSON HENRY L; FANG ZHIQIANG; DU YISHU; YANG MIN; GEISS WILLIAM; WILLIAMS RICHARD; BURDICK DAVID
权利人:CARDAX PHARMACEUTICALS INC
摘要:A method used for synthesizing intermediates for use in the synthesis of carotenoids and carotenoid analogs, and/or carotenoid derivatives. In some embodiments, the invention includes methods for synthesizing optically active intermediates useful for the synthesis of optically active carotenoids. Synthesis of optically active carotenoids, in one embodiment, may be accomplished by forming an optically active dihydroxy intermediate from ketoisopherone. The optically active dihydroxy intermediate may be converted into optically active astaxanthin derivatives.

专利号:US-2023312617-A1
优先权日:2020-07-25
标题 :Process for synthesis of organosilicon compounds from halosilanes
发明人：DOLAI SUKANTA; BHAT SHREEDHAR; TARAFDAR GOURAV
权利人:MOMENTIVE PERFORMANCE MAT INC
摘要:A process for synthesis of an organosilicon compound is provided herein. Also, novel organosilicon compounds prepared by the present process is provided herein. The process comprises the reaction of a halosilane with an organofunctional alkyl halide in the presence of a metal catalyst, a promoter, and an optional co-catalyst. The process provides an efficient synthetic route to produce organosilicon compounds. The process also allows synthesis of organosilicon compounds with a plurality of different functional groups.

专利号:US-2022267266-A1
优先权日:2019-07-09
标 题 :Improved, cost effective process for synthesis of vitamin d3 and its analogue calcifediol from ergosterol
发明人：DATLA ANUPAMA; NAGRE PRASHANT; TAMORE JAGDISH; PRABHU MANOJKUMAR SADANAND; KADAM SACHIN VASANT
权利人:FERMENTA BIOTECH LTD
摘要:Disclosed herein is an improved and efficient process for synthesis of vitamin D3 and its analogue Calcifediol from Ergosterol. Particularly, the present invention discloses the synthesis of key intermediate 3β-tert-Butyldimethylsilyloxy-22-hydroxy-23,24-bisnorchola-5,7-diene (5), and novel intermediate β-tert-Butyldimethylsilyloxy-22-iodo-23,24-bisnorchola-5,7-diene (9) by a simple and cost effective process. The industrially viable processes for preparation of said intermediate(s) results in providing provitamins with various side chains and the desired products in high yield.

专利号:US-9266915-B2
优先权日:2012-09-24
标题 :Synthesis of open metal carbonyl clusters
发明人：KATZ ALEXANDER S; KUPERMAN ALEXANDER; OKRUT ALEXANDER; RUNNEBAUM RON C; OUYANG XIAOYING
权利人:CHEVRON USA INC; UNIV CALIFORNIA
摘要:The present invention is directed to the synthesis of novel stable open metal clusters by selective oxidation of bound ligands. The synthesis comprises, for example, using an amine based oxidant for decarbonylation of specific carbonyl ligands. The synthesis can also comprise further removal of a bound amine group by an acid. The resulting metal cluster contains a coordinatively unsaturated site comprising a carbonyl vacancy. The resulting metal cluster can be used as a catalyst in a variety of chemical transformations.

专利号:US-10913056-B2
优先权日:2017-07-31
标 题:Method for synthesis of copper/copper oxide nanocrystals
发明人：CHEN GUGANG; HARUTYUNYAN AVETIK; RAO YI; LI XIA
权利人:HONDA MOTOR CO LTD; UNIV TEMPLE; TEMPLE UNIV OF THE COMMONWEALTH SYSTEM OF HI
摘要:A simple approach to produce mixed Cu/Cu 2 O nanocrystals having a specific morphology by controlling the reaction temperature during Cu/Cu 2 O nanocrystals synthesis. Other variables are kept constant, such as the amount of reactants, while the reaction temperatures is maintained at a predetermined temperature of 70° C., 30° C. or 0° C., which are used to produce different and controlled morphologies for the Cu/Cu 2 O nanocrystals. The reaction mixture includes a copper ion contributor, a capping agent, a pH adjustor, and reducing agent. The reaction mixture is held at the predetermined temperature for three hours to produce the Cu/Cu 2 O nanocrystals. The synthesis method has advantages such as mass production, easy operation, and high reproducibility.