CAS: 66813-51-2; Alexitol Sodium

专利信息

专利号:US-5599963-A
优先权日:1994-09-21
标题:Catalysts for production of β-hydroxy carbonyl compounds
发明人：CARREIRA ERICK M; SINGER ROBERT A
权利人:CALIFORNIA INST OF TECHN
摘要:The invention relates to catalysts for the synthesis of beta -hydroxy carbonyl compounds, and in particular to enantioselective catalysts.

专利号:US-3992392-A
优先权日:1973-04-27
标题:Synthesis of indoles from anilines and intermediates therein
发明人：GASSMAN PAUL G
权利人:UNIV OHIO STATE RES FOUND
摘要:Preparing indoles and intermediates therefor by reacting an N-haloaniline with a β-carbonylic hydrocarbon sulfide to form an azasulfonium halide, reacting the azasulfonium halide with a strong base to form a thio-ether indole derivative, and then reducing the thio-ether indole, e.g. with Raney nickel, to form the indole compound. When an acetal or ketal of the β-carbonyl hydrocarbon sulfide is used, the azasulfonium salt is treated with a base, and then with an acid to form the thio-ether indole derivative. When an α-ethyl-β -carbonylic hydrocarbon sulfide is used, the resulting azosulfonium salt reacts with strong base to form a thio-ether indolenine derivative, which on reduction with Raney nickel or complex metal hydrides yields 3-substituted indoles. The aniline may be an aminopyridine to form an aza-indole compound in the process. The azasulfonium salts and thio-ether indole or thio-ether indolenine derivatives can be isolated and recovered from their respective reaction mixtures. The thio-ether-indole and thio-ether indolenine derivatives are useful as intermediates to make the indoles without the thio-ether group. The indoles are known compounds having a wide variety of uses, e.g., in making perfumes, dyes, amino acids, pharmaceuticals, agricultural chemicals and the like.

专利号:DE-69424939-T2
优先权日:1993-07-20
标题:SYNTHESIS OF TAXOL AND ITS DERIVATIVES

专利号:AU-689764-B2
优先权日:1993-12-28
标题 :Modular design and synthesis of aminimide containing molecules

专利号:ES-2345640-T3
优先权日:2004-03-11
标 题 :USEFUL BIFENYL COMPOUNDS IN THE SYNTHESIS OF ANTAGONISTS OF THE MUSCARINIC RECEPTOR