3- AROMATICS (PHENOLS) Flashcards
what is 2,4,-dichloro-phenoxyacetic acid and how is it synthesized
it is a plant growth control
what is agent orange and what it is made of?
agent orange is a herbicide
50/50 mix of two compounds:
what is the danger of 2,4,5-T?
self reaction can create dioxin, one of the most toxic man made chemicals
even though it is in very small quantities (Cl is not a strong EWG for an aromatic substitution) but it can still happen and it can be very dangerous
what is the LD50?
median lethal dose of a toxic substance or radiation (LD50) is the dose to kill half the members of a tested population
what is the structure of bisphenol?
how can bisphenol be used to make epoxy resin (glue)?
continues to form a polymer
what are applications of epoxy resins?
protecting coats in electronic circuit boards
adhesives (glues)
patching holes in concrete pavement
how is synthesis of bisphenol A made from phenol?
what is bakelite plastic made from?
phenol and formaldehyde
why are benzene reactions different from alkene reactions?
benzenes prefer substitution reactions instead of addition reactions
a catalyst and often heat is also often needed for benzene to react
reminder of the directionality of groups on benzene
how does BHT prevent food from spoling?
breaks the chain reactions that spoil food by scavenging peroxy radicals
peroxy radicals are the things that cause food spoilage
what is needed to make epoxy resin?
what is the reaction to make the first polymer part of epoxy resin?
what happens when you mix that polymer with the diamine?
mechanism for synthesis of bisphenol A
when you have phenol type thing, you usually get an attack from the para position, then you have water leaving, carbocation, rearomatization etc
synthesis of bakelite
how does the solvent change the bromination of phenol?
how is BHT made from 4-methylphenol?
how does BHT consume peroxy radicals?
