2,2-二苯基乙醇可用作医药合成中间体。
危险处理若吸入2,2-二苯基乙醇,请将患者移至空气新鲜处;如皮肤接触,应脱去污染衣物,并用肥皂水和清水彻底清洗皮肤;如有不适,请就医。如眼睛接触到该物质,应翻开眼睑,用流动清水或生理盐水冲洗,并立即就医。若误食,应立即漱口,禁止催吐,并尽快就医。
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
2,2-二苯基乙酸 | 2,2-diphenylacetic acid | 117-34-0 | C14H12O2 | 212.248 |
联苯乙醛 | 2,2-diphenylethanal | 947-91-1 | C14H12O | 196.249 |
(2-溴乙烷-1,1-二基)二苯 | 2,2-diphenylethyl bromide | 40231-75-2 | C14H13Br | 261.161 |
二苯乙腈 | Diphenylacetonitrile | 86-29-3 | C14H11N | 193.248 |
二苯基乙酸甲酯 | methyl 2,2-diphenylacetate | 3469-00-9 | C15H14O2 | 226.275 |
—— | triethyl(2,2-diphenylethoxysilane) | 56937-47-4 | C20H28OSi | 312.527 |
2,2-二苯乙酸乙酯 | ethyl diphenylacetate | 3468-99-3 | C16H16O2 | 240.302 |
1,1-二苯基环氧乙烷 | 1,1-diphenyloxirane | 882-59-7 | C14H12O | 196.249 |
—— | (1-chloroethane-1,1-diyl)dibenzene | 947-40-0 | C14H13Cl | 216.71 |
二苯基乙酰氯 | diphenylacetic acid chloride | 1871-76-7 | C14H11ClO | 230.694 |
2,2-联苯基乙酰胺 | 2,2-diphenylacetamide | 4695-13-0 | C14H13NO | 211.263 |
3,3-二苯基丙酸 | 3,3-Diphenylpropionic acid | 606-83-7 | C15H14O2 | 226.275 |
—— | benzyl 2,2-diphenylacetate | 37537-23-8 | C21H18O2 | 302.373 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
(2-甲氧基-1-苯乙基)苯 | 2,2-diphenylethyl methyl ether | 41976-80-1 | C15H16O | 212.291 |
苯基乙苯 | 1,1'-ethylidenebis-benzene | 612-00-0 | C14H14 | 182.265 |
—— | 2,2-diphenylethyl acetate | 6319-82-0 | C16H16O2 | 240.302 |
—— | 2,2-diphenyl-1-ethanol nitrate | 130210-00-3 | C14H13NO3 | 243.262 |
—— | [2-(2,2-diphenyl-ethoxy)-ethyl]-dimethyl-amine | 15518-86-2 | C18H23NO | 269.387 |
联苯乙醛 | 2,2-diphenylethanal | 947-91-1 | C14H12O | 196.249 |
1,1-二苯基-2-氯乙烷 | 1,1-diphenyl-2-chloroethane | 5216-46-6 | C14H13Cl | 216.71 |
(2-溴乙烷-1,1-二基)二苯 | 2,2-diphenylethyl bromide | 40231-75-2 | C14H13Br | 261.161 |
—— | 2,2-diphenylethyl iodide | 178685-02-4 | C14H13I | 308.162 |
—— | 2,2-diphenylethyl methanesulfonate | 205390-22-3 | C15H16O3S | 276.356 |
1,1-二苯基乙硫醇 | 2,2-diphenylethanethiol | 71351-02-5 | C14H14S | 214.331 |
—— | Sulfamic acid 2,2-diphenyl-ethyl ester | 106881-53-2 | C14H15NO3S | 277.344 |
3,3-二苯基丙腈 | 3,3-diphenyl-propionitrile | 2286-54-6 | C15H13N | 207.275 |
双(2,2-二苯基乙基)乙二酯 | oxalic acid bis-(2,2-diphenyl-ethyl ester) | 7512-05-2 | C30H26O4 | 450.534 |
—— | 2,2-bis(4'-nitrophenyl)ethan-1-ol | 116868-98-5 | C14H12N2O5 | 288.26 |
—— | 2,2-diphenylethyl acetoacetate | 314775-53-6 | C18H18O3 | 282.339 |
4,4-二苯基丁烷-1-醇 | 4,4-diphenylbutan-1-ol | 56740-71-7 | C16H18O | 226.318 |
—— | di-(2,2-diphenylethyl) disulfide | 863911-83-5 | C28H26S2 | 426.646 |
4,4-二苯基丁酸 | 4,4-diphenylbutanoic acid | 14578-67-7 | C16H16O2 | 240.302 |
—— | 4-(2,2-Diphenylethoxy)-pyridine-1-oxide | 80277-93-6 | C19H17NO2 | 291.349 |
The reaction of 1-bromo-2-X-2-(Y-phenyl) ethane derivatives (1: X = Y = H; 2: X = Ph, Y = H; 3: X = H, Y = 4-Ac; 4: X = H, Y = 3-NO2; 5: X = H, Y = 4-NO2; 6: X = H, Y = 3-Me; 7: X = H, Y = 4-Me) in basic solution was studied, and in most cases, only the elimination product is formed. Only (2-bromo-1-phenylethyl)benzene, 2, yielded significant substitution product, and this yield decreased with the concentration of HO-. Addition of cyclodextrin (β-CD) diminished (about half for 0.02 M cyclodextrin concentration) the reaction rate of all substrates but 4 and 5. In the latter two cases, the rate rises. The observed rate-constant value at 0.5 M NaOH is 6.78 × 10-4 s-1 (at 40°C) and 1.80 × 10-3 s-1 (at 25°C) for 4 and 5, respectively. Under the same reaction conditions but with 0.01 M β-CD, the corresponding rates were 7.70 × 10-4 s-1 and 5.20 × 10-3 s-1. The elimination yield for 2 increased from 64 to 98% when the β-CD changed from zero to 0.02 M at 0.5 M NaHO. Also, there was an increase in the relative elimination products of 20-40% for compounds 6 and 7. The Hammet ρ values were 1.3 and 2.3 for the reaction in pure solvent and in the presence of β-cyclodextrin, indicating an increase in the negative character of the transition state for the reactions in the latter conditions. The results are interpreted in terms of the formation of an inclusion complex whose structure depends on the substrate.Key words: cyclodextrin, elimination reactions, inhibition, catalysis.