PROCESS FOR PREPARING N-(HYDROCARBYL) PHOSPHORIC OR THIOPHOSPHORIC TRIAMIDES
申请人:Kysilka Vladimir
公开号:US20110196172A1
公开(公告)日:2011-08-11
The invention provides a process for preparing N-(hydrocarbyl)phosphoric or thiophosphoric triamides with substantially improved yields and purity. Two equivalents of hydrocarbylamine are used in the reaction with phosphoryl or thiophosphoryl chloride and then with ammonia in an aromatic solvent. The invention further relates to N-(hydrocarbyl)phosphopric or thiophosphoric triamides having the purity of at least 98% wherein R is a hydrocarbyl group and X is O or S.
(RNH)(NH
2
)
2
P=X (I)
Method of Separating Acids from Chemical Reaction Mixtures by Means of Apolar Amines
申请人:Huttenloch Oliver
公开号:US20080287709A1
公开(公告)日:2008-11-20
A process for the removal of acids from reaction mixtures, comprising at least one product of value which is sparingly soluble in water, by at least one unpolar amine as an auxiliary base, which includes: a) reacting the auxiliary base with the acid with formation of a salt; b) reacting the salt formed in step a) with a further base which accepts the acid with liberation of the auxiliary base and combines with the acid to be accepted from the auxiliary base to form a salt which is very readily soluble in water; c) extraction of the mixture obtained in step b) with water or an aqueous medium, wherein the salt of the further base dissolves in the aqueous phase and the product of value, or the solution of the product of value, in a suitable solvent and the auxiliary base form at least one separate nonaqueous phase; and d) removal by distillation of at least part of any solvent present from the at least one nonaqueous phase obtained in step c), to form two nonmiscible liquid phases.