Orgo 8.11, 8.15b

The flashcards below were created by user DesLee26 on FreezingBlue Flashcards.

  1. __ is the simplest of the __: uncharged, reactive intermediates that have a carbon atom with two bonds and two nonbonding electrons. Like borane, __ is a potent __ because it has an __. It adds to the __ of an alkene to form a __.
    • methylene
    • carbenes
    • methylene
    • electrophile
    • unfilled octet
    • electron-rich pi bond
    • cyclopropane
  2. Heating or photolysis  of __ gives nitrogen gas and __.

    The __ generated from __ reacts with alkenes to form __, but __ is very toxic and explosive, and the __ generated is so reactive thta it forms many side proucts. A safer and more reliable way to make cyclopropanes is with the __
    • diazomethane
    • methylene
    • methylene
    • diazomethane
    • cyclopropanes
    • diazomethane
    • methylene
    • Simmons-Smith reagent
  3. The __ is made by adding methylene iodide to the "zinc-copper couple" (__ that has been activated with an impurity of copper). The reagent probably resembles iodomethyl zinc iodide. This kind of reagent is called a __ because it reacts much like a __, but it does not actually contain a __.
    • Simmons-Smith reagent
    • zinc dust
    • carbenoid
    • carbene
    • divalent carbon atom
  4. __ are also formed by reaections of halogenated compounds with bases. If a carbon atom has bonds to at least __ and to enough __ to mae the hydrogen __, it may be possible to form a __.
    • carbenes
    • one hydrogen
    • halongens
    • slightly acidic
    • carbene
  5. This dehydrohalogenation is called an __ because the hydrogen and the halogen are lost from the __ The more common dehydrohalogenations (to form alkenes) are called )) because the hydrogen and halogen are lost from adjacent carbon atoms
    • alpha elim
    • beta elim
  6. The products of the cyclopropanations do what?
    retain any cis or trans stereochemistry of reactants
  7. Like permanganate, ozone cleaves double bonds to give __ and __. HOwever, __ is milder, and both __ and __ can be recovered without further __.
    • ketones
    • aldehydes
    • ozonylsis
    • keetones 
    • aldehydes
    • oxidation
  8. __ is a high-energy form of oxygen produced when UV light or an electrical discharge passes through oxygen gas. UV light from the sun converts oxygen to ozone in the upper atmosphere. This __ shields the earth from some of the high energy UV radiation it would otherwise receive.
    • ozone
    • ozone layer
  9. __ has 142 kJ/mol of excess energy over oxygen, and it is much more reactive. __ reacts with an __ to form a cyclic compound called a __. The __ has two __ linkages, so it is quite unstable. It rearranges rapidly, even at low temperatures, to form an __.
    • ozone
    • primary ozonide or molozonide
    • molozonide
    • peroxy
    • ozonidde
  10. __ are not very stable, and they are rarely isolated. In most cases, they are immediately reduced by a mild reducing agent such as zinc or (more recently) dimethyl sulfide. The products of this reduction are __ and __.
    • ozonides
    • ketones 
    • aldehydes
  11. One of the most common uses of ozonolysis has been used for what?
    determining the positions of double bonds in alkenes
Author
ID
248802
Card Set
Orgo 8.11, 8.15b
Description
Price
Updated
Show Answers