ChemicalBook CAS DataBase List 2,4-DIMETHYL-1,3-PENTADIENE

2,4-DIMETHYL-1,3-PENTADIENE synthesis

11synthesis methods

Product Name:2,4-DIMETHYL-1,3-PENTADIENE
CAS Number:1000-86-8
Molecular formula:C7H12
Molecular Weight:96.17

Ethanamine, N-[(3,5-dichlorophenyl)methylene]-2,2-diethoxy-

1000210-73-0
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1493-13-6 Synthesis

1493-13-6
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594-09-2
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1000-86-8
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Yield: 74%

Reaction Conditions:

in diethyl etherCF3SO3H in Et2O added dropwise over 10 min to cold (-78°C), stirred soln. of Fe complex in Et2O under inert atm., stirred at -78°C for 10 min, PMe3 in Et2O added, stirred at -78°C for 45 min, allowed to warm to room temp.; mixt. of Fe complex and phosphine salt in 63:37 molar ratio pptd., detected by NMR, attempts to separate the two components were unsuccessful, elem. anal.; diene analyzed by GC;

References:

Bleeke, John R.;Hays, Mary K. [Organometallics,1987,vol. 6,# 3,p. 486 - 491]