PROCESS FOR 3-EXOMETHYLENECEPHAM SULFOXIDE ESTERS
3-EXOMETHYLENECEPHAM SULFOXIDE ESTERS ARE OBTAINED IN IMPROVED YIELDS VIA CYCLIZATION OF 3-METHYL-2(4-CHLOROSULFINYL-2-OXO-3-AMINO-1-AZETIDINYL)-3-BUTENOIC ACID ESTERS UNDER ANHYDROUS CONDITIONS WITH A LEWIS ACID TYPE FRIEDEL-CRAFTS CATALYST IN THE PRESENCE OF A NITRO COMPOUND, E.G., NITROMETHANE, N...
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Format | Patent |
Language | English |
Published |
31.07.2007
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Abstract | 3-EXOMETHYLENECEPHAM SULFOXIDE ESTERS ARE OBTAINED IN IMPROVED YIELDS VIA CYCLIZATION OF 3-METHYL-2(4-CHLOROSULFINYL-2-OXO-3-AMINO-1-AZETIDINYL)-3-BUTENOIC ACID ESTERS UNDER ANHYDROUS CONDITIONS WITH A LEWIS ACID TYPE FRIEDEL-CRAFTS CATALYST IN THE PRESENCE OF A NITRO COMPOUND, E.G., NITROMETHANE, NITROETHANE, NITROPROPANE OR NITROBENZENE. |
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AbstractList | 3-EXOMETHYLENECEPHAM SULFOXIDE ESTERS ARE OBTAINED IN IMPROVED YIELDS VIA CYCLIZATION OF 3-METHYL-2(4-CHLOROSULFINYL-2-OXO-3-AMINO-1-AZETIDINYL)-3-BUTENOIC ACID ESTERS UNDER ANHYDROUS CONDITIONS WITH A LEWIS ACID TYPE FRIEDEL-CRAFTS CATALYST IN THE PRESENCE OF A NITRO COMPOUND, E.G., NITROMETHANE, NITROETHANE, NITROPROPANE OR NITROBENZENE. |
Author | LEONARD LARRY WINNEROSKI, JR FRANK BROWN, JR FRANCIS ORERENYO GINAH |
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Title | PROCESS FOR 3-EXOMETHYLENECEPHAM SULFOXIDE ESTERS |
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