284676-41-1Relevant academic research and scientific papers
Preparation of mono-N-sulphonylated diamines
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Page/Page column 5, (2008/06/13)
The present invention relates to a process for preparing mono-N-sulphonylated diamines by reacting diamines with sulphonyl halides in the presence of water, base and organic solvents.
Process for preparing mono-N-sulfonylated diamines
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Page/Page column 8, (2008/06/13)
Production of mono-N-sulfonylated diamine compounds comprises reaction of a diamine compound with a sulfonyl halide in the presence of water, organic solvent and a base. Production of mono-N-sulfonylated diamine compounds (I) of formula (1) comprises reaction of a diamine compound of formula (2) with a sulfonyl halide of formula (3) in the presence of water, organic solvent and a base. R3SO2X (3) R1 and R2 = 1-20C alkyl, 4-15C aryl, 5-16C arylalkyl or R1 and R2 together form a 3-12C alkylene; R3 = 1-20C alkyl, optionally fluorinated or 4-15C aryl; and X = F, Cl, Br or I. Independent claims are also included for the following: (1) solutions (II) containing the mono-N-sulfonylated diamine compounds (I) prepared by the process followed by at least partial removal of water; and (2) catalysts (III) prepared from the solutions (II) by reaction with organometallic compounds of formula (4). (MXn(R4))2 (4) M = Ru, Rh or Ir; R4 = 6-12C aryl, optionally substituted by 1-8C alkyl, benzyl or phenyl, or cyclopentadienyl optionally substituted by up to 5 groups or indenyl; and n = 1 or 2.
