FIELD: chemistry.
SUBSTANCE: invention relates to a method of producing 1-fluoro-2,3-dialkylborocyclopent-2-enes of general formula
,
where R=C2H5, C3H7, C4H9. The method involves reaction of disubstituted acetylenes (hex-3-yne, oct-4-yne, dec-5-yne) with triethylaluminium (AlEt3) in hexane in the presence of a zirconocene dichloride catalyst (Cp2ZrCl2) in ratio acetylene:AlEt3:Cp2ZrCl2 = 10:(10-14):(0.3-0.7) mmol at about 40°C for 4 hours. The reaction mass is then cooled to 0°C. Boron trifluoride etherate (BF3Et2O) is added in equimolar ratio to AlEt3 and mixed at temperature of about 20°C for 30-60 minutes.
EFFECT: invention enables to obtain 1-fluoro-2,3-dialkylborocyclopent-2-enes of general formula (1), which can be used as components of catalyst systems.
1 tbl, 1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PRODUCING 1-FLUORO-3-ALKYLBOROCYCLOPENTANES | 2010 |
|
RU2440356C2 |
| METHOD OF PRODUCING 1-CHLORO-2,3-DIALKYLBORACYCLOPENT-2-ENES | 2012 |
|
RU2507207C2 |
| METHOD OF OBTAINING PYRIDINATES OF 1-FLUORO(CHLORO)-3-ALKYL(ARYL)BOROLANES | 2013 |
|
RU2532925C2 |
| METHOD OF PRODUCING 1-BROMO-3-ALKYLBOROLANES | 2012 |
|
RU2507208C1 |
| METHOD OF OBTAINING 3-ALKYLDIHYDROFURAN--2(3H)-ONES | 2013 |
|
RU2537349C2 |
| METHOD FOR PREPARING 1,7,8,9-TETRAALKYL-10-ETHYL-4-OXO-10-ALUMINATRICYCLO[5,2,1,0]-DEC-8-ENE-3,5-DIONES | 2004 |
|
RU2275374C2 |
| METHOD FOR PREPARING 10-CHLORO-1,7,8,9-TETRAALKYL-4-METHYL-4-AZA-10-ALUMINATRICYCLO[5.2.1.0]DEC-8-ENE-3,5-DIONES | 2005 |
|
RU2295529C1 |
| METHOD FOR PREPARING 11-CHLORO-1,8,9,10-TETRAALKYL-11-ALUMINATRICYCLO[6.2.1.0]UNDEC-9-ENE-3,6-DIONES | 2005 |
|
RU2295530C1 |
| CATALYST FOR SYNTHESIS OF 1-ETHYL-2,3-DIALKYL(PHENYL)ALUMINACYCLOPENT-2-ENES | 2009 |
|
RU2423178C2 |
| METHOD FOR PREPARING 15-CHLORO-1,12,13,14-TETRAALKYL-15-ALUMINATETRACYCLO[10.2.1.0.0]PENTADECA-4(9),5,7,13-TETRAENE-3,10-DIONES | 2005 |
|
RU2295531C1 |
