摘要:
The present invention provides: a process for producing an alkali metal salt of an arylmercaptan compound, represented by general formula (3): ##STR1## which process comprises reacting a disulfide compound represented by general formula: ##STR2## with a hydroxide of an alkali metal M.sup.1 in the presence of a sulfur compound represented by general formula (2): H.sub.(2-i) S(M.sup.1).sub.i (2) a process for producing an alkoxycarbonylalkylthioaryl compound represented by general formula (5): ##STR3## which process comprises reacting the above-mentioned alkalimetal salt of an arylmercaptan compound with a halogenofattyacid ester compound represented by general formula (4): X.sup.1 R.sup.2 COOR.sup.3 (4) at pH 7-10; and a process for producing the above-mentioned alkoxycarbonylalkylthioaryl compound, which process comprises reacting the above-mentioned disulfide compound with the above-mentioned hydroxide of an alkali metal M.sup.1 in the presence of the above-mentioned sulfur compound to obtain an alkali metal salt of an arylmercaptan compound, and reacting said alkali metal salt, without isolating it, with the above-mentioned halogenofatty acid ester compound under the same condition as mentioned above.
摘要:
The present invention provides a process for producing a hexahydropyridazine-1,2-dicarboxy derivative represented by the general formula: ##STR1## wherein R.sup.1 and R.sup.2 represent each independently an alkyl group, by reacting a hydrazinedicarboxy derivative represented by the general formula: R.sup.1 OOC--NH--NH--COOR.sup.2 (1) wherein R.sup.1 and R.sup.2 have the same meaning as mentioned above, with a dihalogenobutane represented by the general formula: X.sup.1 --CH.sub. CH.sub.2 CH.sub.2 CH.sub.2 --X.sup.2 (2) wherein X.sup.1 and X.sup.2 represent each independently a halogen atom, in the presence of an alkali metal hydroxide, characterized in that the above reaction is effected in an aprotic polar solvent, and a process for producing a hexahydropyridazine, characterized by decarboxylating the thus obtained hexahydropyridazine-1,2-dicarboxy derivative (3) without isolation in the presence of an alkali metal hydroxide and a hydrogen-denoting compound.
摘要:
A first metallization layer is locally formed on the surface of a semiconductor substrate thereby leaving portions of the semiconductor substrate's surface exposed. A first silicon oxide layer is then formed in such a manner that it covers the exposed portions of the semiconductor substrate's surface and the first metallization layer. This is followed by the formation of an HMDS molecular layer on the first silicon oxide layer. Then, a second silicon oxide is formed on the molecular layer by means of a CVD process utilizing the chemical reaction of ozone with TEOS. Finally, a second metallization layer is locally formed on the second silicon oxide layer.
摘要:
A print pattern is formed on a glass plate 1 by using a screen plate in which a second ink-permeable region 7 having a lower ink-permeating rate than a first ink-permeable region 4 is formed in a screen region which corresponds to a space between the flat edge portion of the first ink-permeable region 4 and the outer end portion of the glass plate 1, whereby the formation of a locally raised portion in the film formed by printing at its end portion is avoided, and a decorative print is formed by a simple method without leaving a space in a flat end portion of the glass plate.
摘要:
A process for producing a benzylamine which comprises reacting a benzyl halide with an aqueous ammonia solution in the presence of an aromatic aldehyde represented by the formula: ##STR1## wherein R represents a hydrogen atom, a halogen atom or a lower alkyl group, and n is 1 or 2, separating an oily substance from the reaction mixture, and treating the oily substance with a mineral acid.
摘要:
A bend-shaping press mold comprising a pair of pressing dies for bending a glass plate into a shape having a convex surface and a concave surface in a plane by pressing the glass plate with the pair of pressing dies, wherein each of the pressing dies has a convex surface portion to shape the glass plate by pressing it from each side which is finally shaped to have a concave surface portion, and the convex surface portion of one of the pressing dies is not substantially in contact with the glass plate in pressing operations when the convex surface portion of the other die is in contact with the glass plate.
摘要:
Two glass plates on a bending mold are heated in a heating/bending furnace so that they are subjected to provisionally deep-bending operations by their own deadweight, and the provisionally shaped deep-bent portion is pressed by an auxiliary pressing member to thereby form a laminated glass for, for instance, an automobile.