Hydroquinone → Chloroadamantylidene adamantane

Reaction equation

[CH:1]12[CH2:10][CH:5]3[CH2:6][CH:7]([CH2:9][CH:3]([CH2:4]3)[C:2]1=[C:11]1[CH:18]3[CH2:19][CH:14]4[CH2:15][CH:16]([CH2:20][CH:12]1[CH2:13]4)[CH2:17]3)[CH2:8]2.[Cl:21]N1C(=O)CCC1=O.C1(C=CC(O)=CC=1)O>C(Cl)Cl>[Cl:21][C:1]12[CH2:8][CH:7]3[CH2:6][CH:5]([CH2:4][CH:3]([CH2:9]3)[C:2]1=[C:11]1[CH:12]3[CH2:20][CH:16]4[CH2:15][CH:14]([CH2:19][CH:18]1[CH2:17]4)[CH2:13]3)[CH2:10]2

Participants

Procedure

To a solution of 1 mmol (268 mg) adamantylidene adamantane having the formula 19 in 20 cm3CH2Cl2, 1.05 mmoles (140 mg) N-chlorosuccinimide was added. The reaction mixture was stirred at room temperature for 1 hour, diluted with CH2Cl2, and washed twice with water. The organic layer was dried with MgSO4 and evaporated. The yield of 4-eq.-chloroadamantylideneadamantane was 300 mg (98%), melting point: 142°-143° C. (literature: 144°-145° C.). 1H NMR (CDCl3): δ 4.15 (br s, 1H); 3.05 (br s 1H); 2.8 (br s, 3H); 2.6-1.15 (br m, 22H) ppm. When 0.1 mmol hydroquinone was added to the solution, exactly the same reaction occurred, and the product could be isolated in virtually the same quantitative yield.