Dimethyl Ether → (+)-(4aR)-(10bR)-4-methyl-8-(9-phenanthrenyl)-10b-methyl-1,2,3,4,4a,5,6,10b-octahydrobenzo[f]quinolin-3-one

HRID 1379459Notes

Reaction equation

HRID 1379459 reaction equation
[CH3:1][N:2]1[C@H:11]2[C@@:6]([CH3:17])([C:7]3[CH:15]=[CH:14][C:13](Br)=[CH:12][C:8]=3[CH2:9][CH2:10]2)[CH2:5][CH2:4][C:3]1=[O:18].[CH:19]1[C:32]2[CH:31]=[C:30](B(O)O)[C:29]3[C:24](=[CH:25][CH:26]=[CH:27][CH:28]=3)[C:23]=2[CH:22]=[CH:21][CH:20]=1.C(N(CC)CC)C.COC>C(Cl)(Cl)Cl.[Pd].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1>[CH3:1][N:2]1[C@H:11]2[C@@:6]([CH3:17])([C:7]3[CH:15]=[CH:14][C:13]([C:31]4[C:32]5[C:23]([C:24]6[CH:25]=[CH:26][CH:27]=[CH:28][C:29]=6[CH:30]=4)=[CH:22][CH:21]=[CH:20][CH:19]=5)=[CH:12][C:8]=3[CH2:9][CH2:10]2)[CH2:5][CH2:4][C:3]1=[O:18]

Participants

7

Reactant 4

HCID 8254Dimethyl EtherHCID 8471TriethylamineHCID 117757049-Phenanthracenylboronic acidHCID 15355317(4aR)-(10bR)-4,10b-dimethyl-8-bromo-1,2,3,4,4a,5,6,10b-octahydrobenzo[f]quinolin-3-one

Product 1

HCID 53706214(+)-(4aR)-(10bR)-4-methyl-8-(9-phenanthrenyl)-10b-methyl-1,2,3,4,4a,5,6,10b-octahydrobenzo[f]quinolin-3-oneYield 30.3%

Reagents, catalysts & solvents 2

HCID 11979704Tetrakis(triphenylphosphine)palladiumCatalystHCID 6212ChloroformSolvent

Procedure

A 15 mL round bottom flask was charged with (+)-(4aR)-(10bR)-4-methyl-8-bromo-10b-methyl-1,2,3,4,4a,5,6,10b-octahydrobenzo[f]quinolin-3-one (200 mg, 0.65 mmol), tetrakis (triphenylphosphine) palladium (0) (23 mg, 0.02 mmol), 9-phenanthreneboronic acid (173 mg, 0.78 mmol), triethylamine (0.2 mL, 1.3 mmol), and 2 mL of dimethyl ether, fitted with a reflux condenser, and the stirred mixture was heated at 80°, under nitrogen, for 24 h. The mixture was cooled, diluted with chloroform (75 mL) and washed with brine (2×25 mL). The combined organic extracts were dried over sodium sulfate, concentrated, and purified by silica gel chromatography (ethyl acetate eluent), to give 80 mg (30%) of the title compound as a white solid. mp 218°-220°. FDMS: m/e=405. α[D]589 =+63.01 (c=0.98, chloroform).

Workup

  1. customfitted with a reflux condenser
  2. temperaturethe stirred mixture was heated at 80°, under nitrogen, for 24 h
  3. temperatureThe mixture was cooled
  4. washwashed with brine (2×25 mL)
  5. dry with materialThe combined organic extracts were dried over sodium sulfate
  6. concentrationconcentrated
  7. custompurified by silica gel chromatography (ethyl acetate eluent)

Sources & evidence

ORD record
ord-e29a744da9784bb3a88f7c074993e156
Source dataset
uspto-grants-1997_09
Patent number
US05670514

Reaction notes

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