光气法制备异氰酸酯.pdf

US 20110021774A1 (19) United States (12) PatentApplication Publication (10) Pub. No.: US 2011/0021774 A1 Murai et al. (43) Pub. Date: Jan. 27, 2011 (54) METHOD FOR PRODUCING PYRIMIDINE (52) Us. or. .. 544/331; 544/330; 544/332 COMPOUND (57) ABSTRACT (75) Inventors: Shigeo Murai, Shiga (JP); Ryoji To provide a method for producing pyrimidine compound Koto, Mie (JP); Hiroshi useful as an intermediate for agricultural chemicals or phar Yoshizawa, Osaka (JP); Takeshi maceuticals, Which is simple in operation, presents high yield Ohshima, Shiga (JP); Katsuyoshi and produces only a small amount ofby-products. Murakami, Mie (JP); Takao AWazu, Shiga (JP); Hisayoshi The method comprises reacting a compound represented by the formula (I) With a compound represented by the formula Jonishi, Mie (JP); Takayoshi Ando, (II) in the presence of a pyridine compound to produce a Mie (JP); Tadashi Nakamura, Mie compoundrepresented by the formula (III), a compoundrep (JP); Norio Adachi, Shiga (JP); Akihiko Isogai, Shiga (JP) resented by the formula (IV) or their mixture. Correspondence Address: (1)