An earlier method for synthesising very long straight-chain alkanes of very specific lengths has been improved to give, in some cases, gram amounts of materials. Eleven compounds have been made: C98H198, C122H246, C162H326, C194H390, C198H398, C210H422, C242H486, C246H494, C258H518, C294H590 and C390H782. The self-condensation reaction of one of the intermediate aldehydes enabled two chain-branched hydrocarbons to be obtained: C96H193CHRC94H189 where R = CH3 and CH3(CH2)3. Three long-chain compounds containing carboxylic acid groups have been prepared: CH3(CH2)190CO2H,HO2C(CH2)48CO2H and HO2C(CH2)192CO2H.
一种早期合成特定长度的长直链
烷烃的方法已得到改进,在某些情况下可以得到克量的材料。已制备十一种化合物:
C98H198、C122H246、C162H326、C194H390、
C198H398、C210H422、C242H486、
C246H494、C258H518、C294H590和C390H782。其中一种
中间体醛的自缩合反应能够得到两种链支化烃:C96H193CHRC94H189,其中R =
CH3和 (
CH2)3。制备了三种含
羧酸基团的长链化合物: ( )190CO2H、HO2C( )48CO2H和HO2C( )192CO2H。