70901-64-3 Usage
Physical properties
bp 69–70 °C/80 mmHg.
Uses
2-Trimethylsilylmethyl-1,3-butadiene is an isoprenylation reagent; Diels–Alder diene; reactant in Formation of π-Allylic Complex Followed by Acyldemetalation.
Preparation
2-Trimethylsilylmethyl-1,3-butadiene is prepared most conveniently by the
coupling reaction of the Grignard reagent prepared from
(chloromethyl)trimethylsilane with 2-chloro-1,3-butadiene
(chloroprene) in the presence of a catalytic amount of Ni[Ph2P-
(CH2)3PPh2]Cl2 (91% yield) (eq 1). Alternatively, it can be
prepared by the reaction of the same Grignard reagent with allenylmethyl
phosphate in 57–73% yield (eq 2). Direct metalation
of isoprene followed by the reaction with chlorotrimethylsilane
gives 2-trimethylsilylmethyl-1,3-butadiene in low
yield. Thermal isomerization of 1-trimethylsilylmethylcyclobutene
to 2-trimethylsilylmethyl-1,3-butadiene has also
been reported.
Check Digit Verification of cas no
The CAS Registry Mumber 70901-64-3 includes 8 digits separated into 3 groups by hyphens. The first part of the number,starting from the left, has 5 digits, 7,0,9,0 and 1 respectively; the second part has 2 digits, 6 and 4 respectively.
Calculate Digit Verification of CAS Registry Number 70901-64:
(7*7)+(6*0)+(5*9)+(4*0)+(3*1)+(2*6)+(1*4)=113
113 % 10 = 3
So 70901-64-3 is a valid CAS Registry Number.
