A process of producing N-acyl amino acid based surfactants of Formula I,
wherein, R is selected from C6 to C22 alkyl group, R
1
is selected from H, C1 to C4 alkyl, R
2
is selected from all groups on α carbon of natural amino acids, R
3
is selected from COOX, CH
2
—SO
3
X, X is selected from Li
+
, Na
+
or K
+
. The process comprising steps of:
A) preparing fatty acid chlorides by halogenating fatty acids with either phosgene or thionyl chloride in the presence of catalytic amount of same or other N-acyl amino acid surfactant of Formula I or anhydrides of same surfactant; and
B) reacting fatty acid chloride of step (A) with an amino acid in the presence of a base.
一种生产基于N-酰化
氨基酸的表面活性剂的方法,其中,公式I中的R选自C6到C22烷基,R1选自H,C1到C4烷基,R2选自天然
氨基酸α碳上的所有基团,R3选自COOX,
CH2-SO3X,X选自Li+,Na+或K+。该方法包括以下步骤:A)通过在同一或其他N-酰化
氨基酸表面活性剂的存在下或同一表面活性剂的酐的存在下,用
光气或
氯化硫酰卤化
脂肪酸来制备
脂肪酸氯化物;和B)在碱的存在下,将步骤(A)中的
脂肪酸氯化物与
氨基酸反应。