Lithium Chloride → 8-chloro-1-phenyl-1,2,9,10-tetrahydro[1,4]oxazino[2,3,4-jk]carbazol-7(8H)-one

HRID 1279691Notes

Reaction equation

HRID 1279691 reaction equation
[C:1]1([CH:7]2[N:21]3[C:22]4[C:14]([C:15]5[C:16](=[O:23])[CH2:17][CH2:18][CH2:19][C:20]=53)=[CH:13][CH:12]=[CH:11][C:10]=4[O:9][CH2:8]2)[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[Li+].[Cl-:25]>CN(C=O)C>[Cl:25][CH:17]1[C:16](=[O:23])[C:15]2[C:14]3[C:22]4=[C:10]([O:9][CH2:8][CH:7]([C:1]5[CH:2]=[CH:3][CH:4]=[CH:5][CH:6]=5)[N:21]4[C:20]=2[CH2:19][CH2:18]1)[CH:11]=[CH:12][CH:13]=3

Participants

4

Reactant 2

HCID 433294Lithium ChlorideHCID 121486191-phenyl-1,2,9,10-tetrahydro[1,4]oxazino[2,3,4-jk]carbazol-7(8H)-one

Product 1

HCID 223363418-chloro-1-phenyl-1,2,9,10-tetrahydro[1,4]oxazino[2,3,4-jk]carbazol-7(8H)-oneYield 71.3%

Reagents, catalysts & solvents 1

HCID 6228DimethylformamideSolvent

Conditions

Temperature
65 °C

Procedure

A mixture of 1-phenyl-1,2,9,10-tetrahydro[1,4]oxazino[2,3,4-jk]carbazol-7(8H)-one (0.441 g, 1.45 mmol), anhydrous CuCl12 (0.430 mmol, 3.20 mmol), anhydrous LiCl (0.308 g, 7.27 mmol), and DMF (3 mL) is stirred at 65° C. for 50 h. After cooling, the mixture is stored in the refrigerator overnight and then partitioned between CH2C2 and brine. The organic layers are dried over sodium sulfate and taken to dryness. Chromatography on silica gel gel (60 mL) using ethyl acetate/CH2Cl2/hexane (5:45:50) gave 0.349 g (71%) of 8-chloro-1-phenyl-1,2,9,10-tetrahydro[1,4]oxazino[2,3,4-jk]carbazol-7(8H)-one (mixture of diastereomers).

Workup

  1. temperatureAfter cooling
  2. customis stored in the refrigerator overnight
  3. custompartitioned between CH2C2 and brine
  4. dry with materialThe organic layers are dried over sodium sulfate

Sources & evidence

ORD record
ord-921850934b094605ae5cda1e1a9f43bb
Source dataset
uspto-grants-2002_09
Patent number
US06448397B1

Reaction notes

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