METHOD FOR PRODUCING PURIFIED (ORGANOXYMETHYL)ORGANOXYSILANE

To provide a method for producing purified (organoxymethyl)organoxysilane in high purity and high yield, while suppressing disproportionation during distillation.SOLUTION: A method for producing a purified (organooxymethyl)organooxysilane comprises a step of distilling a (organooxymethyl)organooxysilane represented by the following general formula (1), (R1OCH2)mSi(OR2)nR34-m-n (1) (in the formula, R1, R2, and R3 are each independently an unsubstituted C1-10 primary hydrocarbon group; and m and n are integers of 1 to 3 and satisfy m+n≤4), in the presence of a metal organoxide at an internal temperature of a distillation still of less than 100°C and with a degree of pressure reduction adjusted so that the pressure becomes less than 9 kPa.SELECTED DRAWING: None 【課題】蒸留中の不均化を抑制し、高純度且つ高収率で精製（オルガノオキシメチル）オルガノオキシシランを製造する方法を提供すること。【解決手段】下記一般式（１）（Ｒ1ＯＣＨ2）mＳｉ（ＯＲ2）nＲ34-m-n（１）（式中、Ｒ1、Ｒ2およびＲ3は、それぞれ独立して、非置換の炭素数１～１０の１価炭化水素基であり、ｍおよびｎは、１～３の整数であり、ｍ＋ｎ≦４を満たす。）で示される（オルガノオキシメチル）オルガノオキシシランを、金属オルガノオキシドの存在下、蒸留釜の内温が１００℃未満であり、且つ圧力が９ｋＰａ未満となるように減圧度を調整して蒸留する工程を含む精製（オルガノオキシメチル）オルガノオキシシランの製造方法。【選択図】なし