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    • 5. 发明授权
    • Process for recovering methylacetylene and/or propadiene
    • 回收甲基乙炔和/或丙二烯的方法
    • US4701190A
    • 1987-10-20
    • US927978
    • 1986-11-07
    • Peter C. Haehn
    • Peter C. Haehn
    • C07C1/00C07C7/11C07C11/14C07C11/28C07C67/00B01D53/14
    • C07C7/11
    • For recovering methylacetylene and/or propadiene from a C.sub.3 -containing feed stream. The feed stream is treated with a first stream of physical solvent, e.g. DMF, under an elevated pressure to absorb the C.sub.3 -acetylenes. Propadiene is then selectively stripped from the loaded, first solvent stream and rescrubbed with a second solvent stream under a lower pressure. A residual gaseous stream may then be stripped from the second solvent, which gas may be further rescrubbed with a third stream of solvent to obtain an additional propadiene. Methylacetylene in the first solvent, as well as propadiene in the second or third solvent stream may then be recovered separately or together.
    • 用于从含C3进料流中回收甲基乙炔和/或丙二烯。 用第一物理溶剂流处理进料流,例如。 DMF,在高压下吸收C3-乙炔。 然后从负载的第一溶剂流中选择性地除去丙二烯,并在较低的压力下用第二溶剂流重新混合。 然后可以将残余气流从第二溶剂中汽提出,该气体可以用第三溶剂流进一步再分散,以获得另外的丙二烯。 第一溶剂中的甲基乙炔以及第二或第三溶剂流中的丙二烯可以单独或一起回收。
    • 6. 发明授权
    • Preparation of compounds containing two conjugated double bonds cis-cis
and cis-trans
    • 含有两个共轭双键的顺式 - 顺式和顺式 - 反式的化合物的制备
    • US4317905A
    • 1982-03-02
    • US41064
    • 1979-05-21
    • Pietro MassardoGiorgio CassaniPaolo Piccardi
    • Pietro MassardoGiorgio CassaniPaolo Piccardi
    • B01J23/00B01J27/00B01J27/122B01J31/00B01J31/02C07B61/00C07C1/00C07C1/32C07C5/08C07C5/09C07C11/12C07C11/28C07C29/128C07C29/42C07C67/00C07C69/145C07D309/12C07C1/36C07C41/48C07C67/08C07C67/14
    • C07D309/12C07C1/326C07C11/12C07C29/128C07C29/42C07C67/14C07B2200/09Y02P20/55
    • A process is disclosed for preparing aliphatic compounds containing two conjugated double bonds cis-cis or cis-trans, characterized in that a compound of the general formula ##STR1## (in which R is H, alkyl from C.sub.1 to C.sub.10, or OY in which Y is a protective group selected from the class consisting of tetrahydropyranyl and 1-ethoxyethyl; X is an ester function selected from the class consisting of the acetates) is reacted with an alkyl-magnesium halide of the general formula:Z--Mg--R.sup.1 (II)(in which Z is chlorine, bromine or iodine, and R.sup.1 is a C.sub.1 -C.sub.10 alkyl group, or a group (CH.sub.2).sub.n OY in which Y has the same meaning as in formula (I), and n is a number from 3 to 10) in the presence of Li.sub.2 CuCl.sub.4, CuCl, CuBr, or CuI at temperatures ranging from about -30.degree. to +10.degree. C. in the presence of ethyl ether or tetrahydrofuran as solvent, to obtain an aliphatic compound of the general formula:R--CH.sub.2 --C.tbd.C--CH.dbd.CH--CH.sub.2 R.sup.1 (III)in which the carbon atoms linked with the double bond carry two hydrogen atoms in cis position, and reducing the triple bond of (III) with lithium-aluminum hydride to produce the trans-cis compound, or reducing (III) with dialkylborane or catecholborane to produce the cis-cis compound.
    • 公开了一种制备含有两个共轭双键顺式或顺式 - 反式的脂族化合物的方法,其特征在于通式为(I)的化合物(其中R为H,C1至C10的烷基或 OY,其中Y是选自四氢吡喃基和1-乙氧基乙基的保护基; X是选自乙酸酯的酯官能团)与通式Z-Mg的烷基卤化镁反应 -R1(II)(其中Z为氯,溴或碘,R1为C1-C10烷基或Y为与式(Ⅰ)中相同含义的基团(CH 2)n OY),n为 在三乙胺或四氢呋喃作为溶剂的存在下,在约-30℃〜+ 10℃的温度范围内,在Li2CuCl4,CuCl,CuBr或CuI存在下,为3〜10的数,得到脂肪族化合物 其中与双键连接的碳原子携带两个氢原子的通式为:R-CH 2 -C 3 CON C-CH = CH-CH 2 R 1(III) (III)与三氢化铝锂的三键还原以产生反式顺式化合物,或用二烷基硼烷或儿茶酚硼烷还原(Ⅲ)以产生顺式 - 顺式化合物。