Dimethylformamide → 1'-{[1-(4-Chlorophenyl)cyclopropyl]carbonyl}spiro[1,2-benzisothiazole-3,3'-pyrrolidine]1,1-dioxide

Participants

Role	Name	HCID	Charge
Reactant	Dimethylformamide	HCID 6228	—
Reactant	Diisopropylethylamine	HCID 81531	—
Reactant	1-(p-Chlorophenyl)cyclopropanecarboxylic acid	HCID 98606	—
Reactant	Benzotriazol-1-yloxy-tris(dimethylamino)phosphonium hexafluorophosphate	HCID 151348	—
Reactant	Spiro[1,2-benzisothiazole-3,3'-pyrrolidine]1,1-dioxide	HCID 66661967	—
Product	1'-{[1-(4-Chlorophenyl)cyclopropyl]carbonyl}spiro[1,2-benzisothiazole-3,3'-pyrrolidine]1,1-dioxide	HCID 66661507	—

Reaction Steps

To a solution of 1-(4-chlorophenyl)cyclopropanecarboxylic acid (40.0 mg, 0.000203 mol) in N,N-dimethylformamide (0.5 mL, 0.006 mol) at 0 Celsius were added spiro[1,2-benzisothiazole-3,3′-pyrrolidine]1,1-dioxide (45.6 mg, 0.000203 mol) and benzotriazol-1-yloxytris(dimethylamino)phosphonium hexafluorophosphate (99.0 mg, 0.000224 mol). The reaction mixture was stirred for 3 minutes, then N,N-Diisopropylethylamine (88.6 μL, 0.000508 mol) was added. The solution was then stirred at r.t. overnight. The crude material was purified by prep-HPLC to give the desired compound. MS (ESI): 404.0 (M+H+).

Provenance & Evidence

DOI	10.6084/m9.figshare.5104873.v1
Patent number	US07304081B2
Source dataset	uspto-grants-2007_12
ORD ID	ord-2c4d9cbb31554f53b3dcd735f163da24
Source note	uspto-grants-2007_12