英语翻译比较难的化学论文

来源:百度知道 编辑:UC知道 时间:2024/05/16 22:08:23
1,3,5-Tris((3-(2,2¢-bipyrimidin-5-yl)ethynyl)bicyclo[1.1.1]-
pent-1-ylethynyl)benzene (1). A flask charged with 15 (120
mg, 0.441 mmol) and 1,3,5-triiodobenzene (67 mg, 0.147 mmol)
was evacuated and filled with argon. Freshly distilled dry
piperidine (25 mL) was added through a cannula, and the
solution was degassed by three freeze-pump-thaw cycles.
Then, Pd(PPh3)4 (130 mg, 0.0147) was added from a tip tube,
and the yellow solution was heated to 55 °C for 18 h. The
reaction mixture was poured into 2 M NaOH (5 mL). The
organic layer was separated, and the aqueous layer was
extracted with toluene (2  10 mL). After drying over Na2SO4
and evaporation of the solvents, the crude product was
chromatographed by PTLC (alumina, chloroform) to yield 1
as a white powder: 94 mg (72%); mp 195 °C (dec); 1H NMR
(CDCl3, 500 MHz) ä 2.43 (s, 6 H), 7.36 (s, 1 H), 7.42 (t, J ) 4.9
Hz, 1 H), 8.98 (s, 2 H), 9

1,3,5三( ( 3 - ( 2,2 ¢ - bipyrimidin - 5 -基)乙炔)双环[ 1.1.1 ] -

压抑- 1 - ylethynyl )苯( 1 ) 。一瓶被控15 ( 120

毫克, 0.441浓度)和1,3,5 triiodobenzene ( 67毫克, 0.147浓度)

被疏散并充满氩气。新鲜蒸馏干

哌啶( 25毫升)加入通过套管和

解决办法是由三个脱气冻结泵冻融周期。

然后,钯(三苯基膦) 4 ( 130毫克, 0.0147 )增加从冰山管,

和黄的解决办法是加热至55 ° C 18小时那个

反应混合物被注入2男氢氧化钠( 5毫升) 。那个

有机层分离,水层

提取甲苯( 2 10毫升) 。干燥后的硫酸钠

和蒸发的溶剂,原油产品

层析的PTLC (氧化铝,氯仿) ,收益率为1

作为一种白色粉末: 94毫克( 72 % ) ;熔点195 ℃ ( 12月) ;的1H NMR

( CDCl3 , 500兆赫)在2.43 (秒, 6小时) , 7.36 (秒, 1 h )项, 7.42 (吨,强) 4.9

赫兹, 1 h )项, 8.98 (秒, 2小时) , 9月1日(四,强) 4.9赫兹, 2小时) ;的13C ) (氢

核磁共振( CDCl3 , 124兆赫)在30.47 , 30.92 , 58.86 , 73.75 , 78.74 ,

88.80 , 97.07 , 119.68 , 121.48 , 123.26 , 134.33 , 158.01 , 159.53 ,

159.85 , 161.69 ;红外(溴化钾) 407 , 531 , 631 , 660 , 683 , 747 , 770 , 837 ,
877 , 940 , 1163年, 1247年, 1285年, 1384年