CAS: 161265-03-8; (9,9-Dimethyl-9H-Xanthene-4,5-Diyl)Bis(Diphenylphosphine)

上下游产品

CAS号19814-75-6 9,9-二甲基氧杂蒽 | CAS号1079-66-9 氯代二苯基膦 | CAS号640-57-3 4-甲基二苯砜 | CAS号127-63-9 二苯砜 | CAS号205319-10-4 二氯[9,9-二甲基-4,5-... | CAS号6631-37-4 2-苯基氨基吡啶 | CAS号1967-26-6 N-(4-chlorophen... | CAS号1219-99-4 1,3-双(4-氯苯基)尿素 | CAS号4300-33-8 1-(4-methylphen... | CAS号621-00-1 1,3-双(4-甲基苯基)脲 | CAS号102-07-8 |N|,|N|'-二苯基脲

9,9-Dimethyl-4,6-Bis(Diphenyloxyphosphino)Xanthene置于三丁基膦,碘体系中,用 四氢呋喃,乙腈 用作溶剂,化学反应 0.17H,以95%的收率获得4,5-双二苯基膦-9,9-二甲基氧杂蒽
参考文献: A Process For The Reduction Of A Tertiary Phosphine Oxide To The Corresponding Tertiary Phosphine In The Presence Of A Catalyst And Use Of A Tertiary Phosphine For Reducing A Tertiary Phosphine Oxide In The Presence Of A Catalyst[fr] Procédé De Réduction D'Un Oxyde De Phosphine Tertiaire En La Phosphine Tertiaire Correspondante En Présence D'Un Catalyseur,Et Utilisation D'Une Phosphine Tertiaire Pour Réduire Un Oxyde De Phosphine Tertiaire En Présence D'Un Catalyseur
标题: A Process For The Reduction Of A Tertiary Phosphine Oxide To The Corresponding Tertiary Phosphine In The Presence Of A Catalyst And Use Of A Tertiary Phosphine For Reducing A Tertiary Phosphine Oxide In The Presence Of A Catalyst[fr] Procédé De Réduction D'Un Oxyde De Phosphine Tertiaire En La Phosphine Tertiaire Correspondante En Présence D'Un Catalyseur,Et Utilisation D'Une Phosphine Tertiaire Pour Réduire Un Oxyde De Phosphine Tertiaire En Présence D'Un Catalyseur
摘要:一种将三级膦氧转化为对应的三级膦的方法,包括在催化剂的存在下,将所述三级膦氧与还原三级膦反应,以催化转化.

专利信息

专利号:US-11161827-B2
优先权日:2019-04-05
标 题 :Catalytic systems for stereoselective synthesis of chiral amines by enantiodivergent radical C—H amination
发明人：Zhang xiao-xiang; Lang kai
权利人:TRUSTEES BOSTON COLLEGE; THE TRUSTEES OF BOSTON COLLEGE
摘要:In one aspect, the disclosure relates to a mode of asymmetric induction in radical processes based on sequential combination of enantiodifferentiative H-atom abstraction and stereoretentive radical substitution. Also disclosed is an asymmetric system for stereoselective synthesis of strained 5-membered cyclic sulfamides via radical 1,5-C—H amination of sulfamoyl azides. The disclosed metalloradical system can control the degree and sense of asymmetric induction in the catalytic radical C—H amination in a systematic manner. The disclosed system is applicable to a broad scope of substrates with different types of C(sp 3 )—H bonds and exhibits reactivity and selectivity, providing access to both enantiomers of useful 5-membered cyclic sulfamides in a highly enantioenriched form. Also disclosed are catalysts useful in these processes. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present disclosure.

专利号:US-12162849-B2
优先权日:2018-12-21
标题 :Synthesis of 3-methyl-1,2,4-thiadiazole-5-carbohydrazide or of the methyl-d3 deuterated form thereof
发明人：HOVEYDA HAMID; DUTHEUIL GUILLAUME
权利人:OGEDA SA
摘要:The present invention relates to a method of synthesis of compound (I), wherein R1 represents methyl or methyl-d3, thus corresponding to 3-methyl-1,2,4-thiadiazole-5-carbohydrazide or to the methyl-d3 deuterated form thereof. These compounds are useful as key intermediates in the synthesis of pharmaceutical compounds, especially fezolinetant and deuterated fezolinetant.

专利号:US-9701608-B2
优先权日:2013-12-05
标题 :Process for the synthesis of 7-methoxy-naphthalene-1-carbaldehyde and application in the synthesis of agomelatine
发明人：BRIERE JEAN-FRANÇOÃ?S; LEBEUF RAPHAËL; LEVACHER VINCENT; HARDOUIN CHRISTOPHE; LECOUVE JEAN-PIERRE
权利人:SERVIER LAB; LES LABORATORIES SERVIER
摘要:Process for the industrial synthesis of the compound of formula (I):

专利号:US-9783519-B2
优先权日:2015-06-18
标 题:Palladium/silver co-catalyzed tandem reactions synthesis of phenylacetophenone derivatives by oxabenzonorbornadienes with terminal alkynes and their anti-tumor or anti-cancer activities
发明人：BIAN ZHAOXIANG; LIN CHENGYUAN; MU HUAIXUE; FAN BAOMIN; ZHOU YONGYUN; CHEN JINGCHAO; LU AIPING; CHAN ALBERT SUN-CHI
权利人:UNIV HONG KONG BAPTIST UNIV; UNIV YUNNAN MINZU
摘要:This invention relates to the quick and efficient synthesis of anti-tumor or anti-cancer compounds. More particularly, it relates to the quick and efficient synthesis of anti-tumor or anti-cancer compounds comprising phenylacetophenone derivatives using oxabenzonorbornadienes with terminal alkynes.

专利号:US-9994508-B2
优先权日:2012-12-11
标 题:Versatile and functionalised intermediates for the synthesis of vitamin D and novel vitamin D derivatives
发明人：LOPEZ PEREZ BORJA; SIGUEIRO PONTE RITA; MAESTRO SAAVEDRA MIGUEL A; MOURINO MOSQUERA ANTONIO
权利人:ENDOTHERM GMBH
摘要:Novel intermediates for the complete synthesis of vitamin D are provided that allow a great versatility of functional groups in the final vitamin derivatives. Vitamin derivatives that are epimeric in position 3 and vitamin derivatives with a wide range of functionalities in position 18, including compounds with isotopic labelling are provided.

专利号:US-8283476-B2
优先权日:2007-06-26
标 题:Transition metal catalyzed synthesis of 2H-indazoles
发明人：HALLAND NIS; NAZARE MARC; LINDENSCHMIDT ANDREAS; ALONSO JORGE; RKYEK OMAR; URMANN MATTHIAS
权利人:HALLAND NIS; NAZARE MARC; LINDENSCHMIDT ANDREAS; ALONSO JORGE; RKYEK OMAR; URMANN MATTHIAS; SANOFI SA
摘要:The present invention relates to a process for the regioselective synthesis of compounds of the formula I, n nwherein R0; R1; R2; R3; R4; R5; A1; A2; A3; A4, Q and J have the meanings indicated in the claims. The present invention provides a direct transition metal catalyzed process to a wide variety of multifunctional 2H-indazoles or 2H-azaindazoles of the formula (I) from 2-halo-phenylacetylenes or (2-sulfonato)phenylacetylenes and monosubstituted hydrazines.