摘要:
There are disclosed a process for producing a 2-hydroxy-methylene-3,3dialkoxypropanenitrile alkali metal salt (ALVM.sub.2) represented by the formula (I): ##STR1## wherein R represents a lower alkyl group having 1 to 4 carbon atoms and M represents an alkali metal,which comprises allowing a 3,3-dialkoxypropanenitrile represented by the formula (II):(RO).sub.2 CHCH.sub.2 CN (II)wherein R is the same as defined above,to react with carbon monoxide in a lower alcoholic solution of an alkali metal lower alkoxide; and a process for obtaining ALVM.sub.2 -alcohlic slurry, which comprises adding a lower alcohol having 1 to 4 carbon atoms to a synthetic reaction mixture containing ALVM.sub.2 represented by the above formula (I) and methyl formate and heating the mixture to 30.degree. to 70.degree. C., thereby taking methyl formate out of the system.
摘要:
Ortho-substituted benzyl carboxylates of the formula ##STR1## where R.sup.1 is alkoxy, alkylthio, halogen or amino, R.sup.2 is alkoxycarbonyl, cyano or CONH.sub.2, R.sup.3 l is hydrogen, halogen, cyano, aryl, aryloxy, a saturated or unsaturated heterocyclic radical, cycloalkyl, or substituted cyclopropyl, X is alkylene, and n is 0 or 1, and fungicides containing these compounds.
摘要:
Disclosed is ammoxidation of C.sub.3 to C.sub.5 acyclic alkanes with NH.sub.3 and O.sub.2 using (1) a mole ratio of alkane:NH.sub.3 in the range from 2 to 16 and a mole ratio of alkane:O.sub.2 in the range 1 to 10 and (2) a mixture of particular catalyst compositions, the first being especially effective to promote formation of an unsaturated nitrile and an olefin from the paraffin, and the second catalyst composition being especially effective to promote the conversion of the olefin to the unsaturated mononitrile. Catalyst compositions useful in the process are also disclosed.
摘要:
Ammoxidation of C.sub.3 to C.sub.5 acyclic alkanes with NH.sub.3 and O.sub.2 using (1) a mole ratio of alkane:NH.sub.3 in the range from 2 to 16 and a mole ratio of alkane:O.sub.2 in the range 1 to 10 and (2) a mixture of particulate catalyst compositions, the first being especially effective to promote formation of an unsaturated nitrile and an olefin from the paraffin, and the second catalyst composition being especially effective to promote the conversion of the olefin to the unsaturated nitrile. Catalytic compositions useful in the process are disclosed.
摘要:
A process for the manufacture of adiponitrile is described by reacting butadiene with hydrogen cyanide and a catalyst which is a complex of a copper salt and an organic nitrile to form 3-pentenenitrile, which is then hydrocyanated to adiponitrile in which the solvent and sole nitrile complexing agent for the copper is 3-methylglutaronitrile or a mixture of 3-methylglutaronitrile with 2-ethylsuccindinitrile or with 2-ethylsuccindinitrile and adiponitrile.
摘要:
Spent copper halide hydrocyanation catalysts are reactivated by treating with hydrogen halide. The process is particularly applicable to the hydrocyanation of butadiene to 3-pentenenitrile in the presence of a copper halide catalyst.
摘要:
Polyene esters, ethers, carbamates, thioesters, amides, carbonyls and nitriles, containing at least one pair of conjugated double bonds, which are useful in killing pests, such as insects, and preventing the proliferation of such pests by upsetting their hormonal balance.
摘要:
Organic nitriles are obtained by reaction of an olefin and hydrogen cyanide in the presence of a catalytic amount of a Group IB metal salt, especially a cuprous halide and an organic acid. With butadiene as the olefin the nitrile product contains more than 80% by weight of linear 3-pentene nitrile.
摘要:
A process for isomerizing 2-methyl-3-butenenitrile to a linear pentenenitrile such as 3-pentenenitrile with a pi -allyl nickel catalyst compound. The linear pentenenitriles can be further hydrocyanated to produce adiponitrile, an intermediate to hexamethylenediamine used in manufacture of polyamides for fibers, films and molded articles.
摘要:
Cis- and trans-2-pentenenitriles in a mixture of pentenenitriles are brought closer to their equilibrium ratio by contacting the mixture with a Lewis acid/Lewis base catalyst composition. By this process trans-2-pentenenitrile can be removed from a mixture containing mainly 3-pentenenitrile by isomerizing the trans-2pentenenitrile to cis-2-pentenenitrile and removing the more volatile cis isomer by fractional distillation. There is substantially no isomerization of 3-pentenenitrile to cis- or trans-2-pentenenitrile.