SU618378A1 - Method of obtaining alkyl-(phenyl) magnesium halides - Google Patents
Method of obtaining alkyl-(phenyl) magnesium halidesInfo
- Publication number
- SU618378A1 SU618378A1 SU762432319A SU2432319A SU618378A1 SU 618378 A1 SU618378 A1 SU 618378A1 SU 762432319 A SU762432319 A SU 762432319A SU 2432319 A SU2432319 A SU 2432319A SU 618378 A1 SU618378 A1 SU 618378A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- phenyl
- magnesium
- magnesium halides
- obtaining alkyl
- alkyl
- Prior art date
Links
Description
Изобретение относитс к улучшенному способу получени алкил (фенил)магнийгалогеницов , которые могут быть исполь/зованы в производстве полифенилсилоксановой смолы марки Ф-9 и полиэтилсилоксановой жидкости СГС.This invention relates to an improved process for the preparation of alkyl (phenyl) magnesium halides which can be used in the production of F-9 polyphenylsiloxane resin and CGS polyethylsiloxane liquid.
По технической сущности и йостигаембму рузультату к предлагаемому способу наиболее близок способ получени алкил (фенил)магнийгалогениаов реакцией алкил (фенил)галогенида с магнием с использованием в качестве катализатора тетра- этоксисилана при 25-30 С fil .In terms of technical nature and results, the method of obtaining alkyl (phenyl) magnesium halides by the reaction of alkyl (phenyl) halide with magnesium using tetraethoxysilane at 25-30 C fil as the catalyst is the closest to the proposed method.
Реактив Гринь ра получают при использовании незначительного количества катализатора-тетраэтоксисилана как в среде углеводородного растворител (ортоксилола ), так и без него.Grignard reagent is obtained by using an insignificant amount of catalyst-tetraethoxysilane both in the medium of a hydrocarbon solvent (orthoxylene) and without it.
При этом выход, %, хлористого изобутилмагни ,51,О, бромистого изоамилмагни 58,5, бромистого 1-метилпентилмагни 6О,0, бромистого октилмагни 35,0, бромистого фенилмагни 25,0.At the same time, the yield,%, of isobutyl magnesium chloride, 51, O, isoamyl magnesium 58.5, methyl 1-methylpentyl magnesium 6O, 0, 35.0 octyl magnesium, methyl bromide, 25.0.
Недостатками известного способа вл ютс низкий выход продукта (25,О6О ,О%), а также необходимость дополнительной активации,; например, йодом при получении бромистого октилмагни и бромистого фенилмагни .The disadvantages of this method are low product yield (25, O6O, O%), as well as the need for additional activation; for example, iodine in the preparation of methyl octyl magnesium and methyl phenyl magnesium.
С целью увеличени выхода целевого продукта по предлагаемому способу в качестве катализатора примен ют фен галоидфенил или галоидалкилтриэтоксисилан , например фенилтриэтоксисилан, хлор- или дихлорфенилтриэтоксисилан, трифторпропилтриэтоксисилан и др., вз тые в количестве 0,4-3,О мол. % от галоидалкила, и нагревание ведут при 8О-140°С,In order to increase the yield of the target product of the proposed method, phenol halophenyl or haloalkyltriethoxysilane is used as a catalyst, for example phenyltriethoxysilane, chloro or dichlorophenyltriethoxysilane, trifluoropropyltriethoxysilane, etc., taken in an amount of 0.4-3, O mol. % of halogenated, and heating is carried out at O-140 ° C,
В качестве органического растворител целесообразно использовать толуол .It is advisable to use toluene as an organic solvent.
Пример, В круглодонную колбу , снабженную термометром, мешалкой и обратным холодильником, загружают 0,25 моль магни , 0,001-0,0075 моль катализатора (см. таблицу) и 30 млExample: A round bottom flask equipped with a thermometer, a stirrer and a reflux condenser is charged with 0.25 mol of magnesium, 0.001-0.0075 mol of catalyst (see table) and 30 ml
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU762432319A SU618378A1 (en) | 1976-12-20 | 1976-12-20 | Method of obtaining alkyl-(phenyl) magnesium halides |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU762432319A SU618378A1 (en) | 1976-12-20 | 1976-12-20 | Method of obtaining alkyl-(phenyl) magnesium halides |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU618378A1 true SU618378A1 (en) | 1978-08-05 |
Family
ID=20687518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU762432319A SU618378A1 (en) | 1976-12-20 | 1976-12-20 | Method of obtaining alkyl-(phenyl) magnesium halides |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU618378A1 (en) |
-
1976
- 1976-12-20 SU SU762432319A patent/SU618378A1/en active
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