76084-59-8

Basic information

• Product Name: dimethyl-<(2E)-2-methylpenta-2,4-dienyl>-(3-phenylprop-2-ynyl)ammonium bromide
• CAS NO: 76084-59-8
• Molecular Weight: 320.272
• Mol File: 76084-59-8.mol
• Article Data: 1

Chemical Properties

• CAS DataBase Reference: dimethyl-<(2E)-2-methylpenta-2,4-dienyl>-(3-phenylprop-2-ynyl)ammonium bromide(CAS DataBase Reference)
• NIST Chemistry Reference: dimethyl-<(2E)-2-methylpenta-2,4-dienyl>-(3-phenylprop-2-ynyl)ammonium bromide(76084-59-8)
• EPA Substance Registry System: dimethyl-<(2E)-2-methylpenta-2,4-dienyl>-(3-phenylprop-2-ynyl)ammonium bromide(76084-59-8)

Safety Data

• Hazardous Substances Data: 76084-59-8(Hazardous Substances Data)

Upstream product

• 75088-96-9 (2E)-ethyl 2-methylpenta-2,4-dienoate 
• 1572-71-0 (E)-2-methylpenta-2,4-dien-1-ol 
• 2568-65-2 N,N-dimethyl-3-phenyl-2-propyn-1-amine 
• 50999-02-5 (2E)-2-methylpenta-2,4-dienyl bromide 

Downstream Products

• 75954-85-7 (5E)-3-dimethylamino-7-methyl-1-phenylocta-5,7-dien-1yne 
• 343220-64-4 3-dimethylamino-5-methyl-1-phenyl-4-vinyl-5-en-1-yne 
• 75954-78-8 (5Z)-3-dimethylamino-5-methyl-1-phenylocta-5,7-dien-1-yne 

Relevant articles and documents

Base Catalysed Rearrangements involving Ylide Intermediates. Part 7. The Rearrangements of Allyl(pentadienyl)- and Propionyl(pentadienyl)-ammonium Cations. The Sigmatropic Rearrangement.

The base catalysed rearrangements of the cations (7), (17), (22), and (27) gave the enamines (9), (18), (23), and (28), which on hydrolysis yielded the aldehyde (10), (19), (24), and (29) respectively.The reactions are shown to be concerted sigmatropic rearrangements proceeding via a nine-membered transition state involving 10? electrons.The base catalysed rearrangements of the 3-phenylprop-2-ynyl (pentadienyl) ammonium cations (51), (52), (60), and (61), however yield only the products of , , and sigmatropic rearrangements.