Provided herein is a process for preparation of 3,7-bis-(dimethylamino)-phenothian-5-ium chloride: Formula (I). The said process comprises preparing 3,7-dibromophenothiazin-5-ium bromide wet Crude(III) from phenothiazine (II) along promoter, catalyst and brominating agent in presence of organic solvent; preparing 3,7-bis-(dimethylamino)-phenothiazin-5-ium bromide (IV) from 3,7-dibromophenothiazin-5-ium bromide; preparing 3,7-bis (Dimethylamino)-phenothiazin-5-ium chloride from 3,7-bis-(dimethylamino)-phenothiazin-5-ium bromide and subsequently purifying and removing metal content through metal scavenger from 3,7-bis-(dimethylamino)-phenothiazin-5-ium chloride (I). The present process eliminates the additional step of ion exchange column in the reaction and provides 99 to 99.5 percentage of product purity.
Provided herein is a process for preparation of 3,7-bis-(dimethylamino)-phenothian-5-ium chloride: Formula (I). The said process comprises preparing 3,7-dibromophenothiazin-5-ium bromide wet Crude(III) from phenothiazine (II) along promoter, catalyst and brominating agent in presence of organic solvent; preparing 3,7-bis-(dimethylamino)-phenothiazin-5-ium bromide (IV) from 3,7-dibromophenothiazin-5-ium bromide; preparing 3,7-bis (Dimethylamino)-phenothiazin-5-ium chloride from 3,7-bis-(dimethylamino)-phenothiazin-5-ium bromide and subsequently purifying and removing metal content through metal scavenger from 3,7-bis-(dimethylamino)-phenothiazin-5-ium chloride (I). The present process eliminates the additional step of ion exchange column in the reaction and provides 99 to 99.5 percentage of product purity.
C07D 279/18 - Thiazines-1, 4; Thiazines-1, 4 hydrogénées condensés avec des carbocycles ou avec des systèmes carbocycliques condensés en [b, e] avec deux cycles à six chaînons
Provided herein is a process for preparation of 3,7-bis-(dimethylamino)-phenothiazin-5-ium chloride (I).The said process comprises preparing 3,7-dibromophenothiazin-5-ium bromide wet Crude(III) from phenothiazine (II) along promoter, catalyst and brominating agent in presence of organic solvent; preparing 3,7-bis-(dimethyIamino)-phenothiazin-5-ium bromide (IV) from 3,7- dibromophenothiazin-5-ium bromide; preparing 3,7-bis (Dimethylamino)-phenothiazin-5-ium chloride from 3,7-bis-(dimethylamino)-phenothiazin-5-ium bromide and subsequently purifying and removing metal content through metal scavenger from 3,7-bis-(dimethylamino)-phenothiazin- 5-ium chloride (I). The present process eliminates the additional step of ion exchange column in the reaction and provides more than 99.5 percentage of product purity.
C07D 279/18 - Thiazines-1, 4; Thiazines-1, 4 hydrogénées condensés avec des carbocycles ou avec des systèmes carbocycliques condensés en [b, e] avec deux cycles à six chaînons
Provided herein is a process for preparation of 3,7-bis-(dimethylamino)-phenothiazin-5-ium chloride: Formula (I). The said process comprises preparing 3,7-dibromophenothiazin-5-ium bromide wet Crude(III) from phenothiazine (II) along promoter, catalyst and brominating agent in presence of organic solvent; preparing 3,7-bis-(dimethylamino)-phenothiazin-5-ium bromide (IV) from 3,7-dibromophenothiazin-5-ium bromide; preparing 3,7-bis (Dimethylamino)-phenothiazin-5-ium chloride from 3,7-bis-(dimethylamino)-phenothiazin-5-ium bromide and subsequently purifying and removing metal content through metal scavenger from 3,7-bis-(dimethylamino)-phenothiazin-5-ium chloride (I). The present process eliminates the additional step of ion exchange column in the reaction and provides 99 to 99.5 percentage of product purity.
C07D 279/18 - Thiazines-1, 4; Thiazines-1, 4 hydrogénées condensés avec des carbocycles ou avec des systèmes carbocycliques condensés en [b, e] avec deux cycles à six chaînons
The present invention discloses Octenidine based compounds of formula (A) or formula (B) and formula (C) where in, n=1, 2, 3, 4 and R′=un-substituted or substituted aryl or alkyl group; R is hydroxy or hydrogen, X is chlorine, bromine and iodine. The present invention also relates to a process for the preparation thereof.
C07D 401/06 - Composés hétérocycliques contenant plusieurs hétérocycles comportant des atomes d'azote comme uniques hétéro-atomes du cycle, au moins un cycle étant un cycle à six chaînons avec un unique atome d'azote contenant deux hétérocycles liés par une chaîne carbonée contenant uniquement des atomes de carbone aliphatiques
The present invention discloses Octenidine based compounds of formula (A) or formula (B) and formula(C) where in, n=1,2,3,4 and R'=un-substituted or substituted aryl or alkyl group; R is hydroxy or hydrogen, X is chlorine, bromine and iodine. The present invention also relates to a process for the preparation thereof.
The present invention discloses Octenidine based compounds of formula (A) or formula (B) and formula(C) where in, n=1,2,3,4 and R'=un-substituted or substituted aryl or alkyl group; R is hydroxy or hydrogen, X is chlorine, bromine and iodine. The present invention also relates to a process for the preparation thereof.
C07D 213/89 - Composés hétérocycliques contenant des cycles à six chaînons, non condensés avec d'autres cycles, ne comportant qu'un atome d'azote comme unique hétéro-atome du cycle et avec au moins trois doubles liaisons entre chaînons cycliques ou entre chaînons comportant trois liaisons doubles avec des hétéro-atomes liés directement à l'atome d'azote du cycle
C07D 213/00 - Composés hétérocycliques contenant des cycles à six chaînons, non condensés avec d'autres cycles, ne comportant qu'un atome d'azote comme unique hétéro-atome du cycle et avec au moins trois doubles liaisons entre chaînons cycliques ou entre chaînons
C07D 213/02 - Composés hétérocycliques contenant des cycles à six chaînons, non condensés avec d'autres cycles, ne comportant qu'un atome d'azote comme unique hétéro-atome du cycle et avec au moins trois doubles liaisons entre chaînons cycliques ou entre chaînons comportant trois liaisons doubles
C09B 11/24 - Phtaléines contenant des groupes amine
C09B 67/00 - Traitements, sans réaction chimique, influençant les propriétés physiques, p.ex. de teintures ou d'impression, des matières colorantes, p.ex. traitement par des solvants; Caractéristiques du procédé de fabrication des préparations tinctoriales; Préparations tinctoriales ayant un aspect physique particulier, p.ex. tablettes, feuilles
C09B 61/00 - Colorants naturels préparés à partir de sources naturelles
C09B 69/00 - Colorants non prévus par un seul groupe de la présente sous-classe
C07D 209/36 - Atomes d'oxygène en position 3, p.ex. adrénochrome
The present invention involves an improved process for the preparation of Indocyanine green of Formula (I) having high purity of about 99%, wherein the process comprises steps of reacting 1,1,2-trimethyl-1H-benzo[e]indole with 1,4-butane sulfone in boiling solvent to give 4-(1,1,2-trimethyl-1H-benzo[e]indolium-3-yl)butane-1-sulfonate. Followed by reacting 4-(1,1,2-trimethyl-1H-benzo[e]indolium-3-yl)butane-1-sulfonate of Formula (IV) and N-phenyl-N-((1E,3E,5E)-5-(phenylimino)penta-1,3-dienyl)acetamide of formula (V) in presence of sodium acetate and alcohol; and extracting the title compound formula (I) with an ester solvent.
C09B 23/08 - Colorants méthiniques ou polyméthiniques, p.ex. du type cyanine caractérisés par la chaîne méthinique contenant un nombre impair de groupes CH plus de trois groupes CH, p.ex. polycarbocyanines
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