Bromide ion → 2,2'-Thiodipyridine

2.22 g of 2-mercaptopyridine and 0.96 g of 50% sodium hydride were dissolved in 50 ml of dimethylformamide, and the mixture was stirred at room temperature for one hour. Thereafter, 13.0 g of polyprenyl bromide of general formula (II) in which n=15 and A=Br were added. After the addition, the mixture was stirred overnight at room temperature. The reaction mixture was poured into about 50 ml of water and extracted with diethyl ether. The diethyl ether layer was washed with water and dried over anhydrous magnesium sulfate. The ether was distilled off to give a yellow liquid. The liquid was purified by silica gel column chromatography using hexane-ethyl acetate as the eluent to give 7.8 g of a slightly yellow liquid. NMR analysis of this liquid demonstrated that the signal (doublet, δ=3.91) assignable to --CH2Br of the starting polyprenyl bromide had disappeared and a signal (doublet, δ=3.78) assignable to --CH2S and a signal (multiplet, δ=6.75-8.35) assignable to --S--C5H4N had newly appeared. FD-MASS of this liquid gave m/e=1335.

1. additionAfter the addition
2. stirringthe mixture was stirred overnight at room temperature
3. extractionextracted with diethyl ether
4. washThe diethyl ether layer was washed with water
5. dry with materialdried over anhydrous magnesium sulfate
6. distillationThe ether was distilled off
7. customto give a yellow liquid
8. customThe liquid was purified by silica gel column chromatography
9. customto give 7.8 g of a slightly yellow liquid
10. customFD-MASS of this liquid gave m/e=1335

ORDレコード

ord-6a6f9f37cbd243d89d0cd4c40e4cf230

出典データセット

uspto-grants-1986_07

DOI

10.6084/m9.figshare.5104873.v1

特許番号

US04603208