170709-41-8Relevant academic research and scientific papers
Preparation and properties of nitrogen-substituted thiosulfinyl compounds and related new heterocycles
Yoshida, Sanae,Sugihara, Yoshiaki,Nakayama, Juzo
, p. 8116 - 8119 (2008/03/13)
The reaction of dilithiated N,N′-dimethyl-1,2-diphenylethylenediamine with disulfur dichloride (S2Cl2) gave a thiosulfinyl compound (R2N)2S{double bond, long}S, 2,5-dimethyl-3,4-diphenyl-1,2,5-thiadiazolidine 1-sulfide, whereas the treatment of dilithiated N,N′-bis(p-toluenesulfonyl)-1,2-diphenylethylenediamine with S2Cl2 furnished a new heterocycle, 3,6-bis(p-toluenesulfonyl)-4,5-diphenyl-4H,5H-1,2,3,6-dithiadiazine.
Preparation of mono-N-sulphonylated diamines
-
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.
Chiral bis(N-sulfonylamino)phosphine- and TADDOL-phosphite-oxazoline ligands: Synthesis and application in asymmetric catalysis
Hilgraf, Robert,Pfaltz, Andreas
, p. 61 - 77 (2007/10/03)
A series of N,P-ligands has been prepared, containing a chiral oxazoline ring and as a second chiral unit a bis(N-sulfonylamino)phosphine group embedded in a diazaphospholidine ring or a cyclic phosphite group derived from TADDOL. These modular ligands are readily synthesized from chiral amino alcohols and chiral 1,2-diamines or TADDOLs. Palladium and iridium complexes derived from these ligands were found to be efficient catalysts for enantioselective allylic alkylation and olefin hydrogenation, respectively.
Process for preparing mono-N-sulfonylated diamines
-
Page/Page column 7-8, (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.
