中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | 2-<2-<2-(Hydroxymethyl)phenyl>ethynyl>benzaldehyde | 18887-53-1 | C16H12O2 | 236.27 |
1-甲基-2-[2-(2-甲基苯基)乙炔基]苯 | di-o-tolylethyne | 5294-03-1 | C16H14 | 206.287 |
2-乙炔苯甲醇 | 2-ethynylbenzyl alcohol | 10602-08-1 | C9H8O | 132.162 |
—— | 2,2'-(ethyne-1,2-diyl)dibenzaldehyde | 18887-52-0 | C16H10O2 | 234.254 |
1-(溴甲基)-2-[2-[2-(溴甲基)苯基]乙炔基]苯 | 2,2'-Bis(brommethyl)diphenylacetylen | 5865-77-0 | C16H12Br2 | 364.079 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | Bis(2-{[(but-2-yn-1-yl)oxy]methyl}phenyl)acetylene | 207673-28-7 | C24H22O2 | 342.437 |
—— | Bis[({[3-(trimethylsilyl)prop-2-yn-1-yl]oxy}methyl)phenyl]acetylene | 207673-29-8 | C28H34O2Si2 | 458.748 |
1-(溴甲基)-2-[2-[2-(溴甲基)苯基]乙炔基]苯 | 2,2'-Bis(brommethyl)diphenylacetylen | 5865-77-0 | C16H12Br2 | 364.079 |
—— | 16,17-didehydro-5,11-dihydro-7H-dibenzo[g,k][1,5]dioxacyclotridecyne-7,9(8H)-dione | 1421837-02-6 | C19H14O4 | 306.318 |
Triynes R-C≡C-CH2CH2-Ar-C≡C-Ar'-CH2CH2-C≡C-R were subjected to Co(I)- or Ni(0)-mediated intramolecular [2+2+2] cycloisomerization to provide corresponding tetrahydropentahelicene, tetrahydrohexahelicene, and tetrahydroheptahelicene in good to moderate yields. The reaction tolerates various substituents at pendant acetylene moieties (R = H, CH3, trimethylsilyl, not triisopropylsilyl) and fluorine in an aromatic part. By contrast, under Rh(I) or Pd(0) catalysis, triyne with the CH2OCH2 tether lost pendant propargyl moieties and an aromatic spiroketal was formed preferentially.
The Pd- or Pd/Cu-catalyzed coupling reactions of halobenzenes bearing the methyl, hydroxymethyl, acetoxymethyl, methoxycarbonyl, or both methoxy and 4,4-dimethyl-4,5-dihydro-1,3-oxazol-2-yl groups in the