…now commonly accepted chair confirmation. He also proposed that substituents can take two different types of positions on the ring, which he called c- and e-bonds. He also showed that…
Read more…The two chair forms of cyclohexane itself are completely indistinguishable, but this is not true in most cases. For example, in 1-methylcyclohexane, one chair conformer has an axial methyl group,…
Read more…available to MOC Members only. To get access to this page, plus over 1500 quizzes, the Reaction Encyclopedia, Org 1 / Org 2 summary sheets, and flashcards, sign up here…
Read more…however, it gives a very complex 1H NMR spectrum. At low temperatures interconversions are slow; the chemical shifts of the axial and equatorial protons are resolved, and complex spin-spin couplings…
Read moreThese questions will test your knowledge of the key trends that govern the relative ordering of boiling and melting points. Quiz#: 567 Click to Flip Quiz#:1237 Click to Flip Quiz#:1238…
Read more…occurs to a stereocenter, the stereochemistry of the carbon will invert. Some examples of nucleophiles that will add to epoxides include hydroxyl (HO-) alkoxy (RO-), Grignard reagents and (sometimes) organocuprates…
Read more…to be the most completely idiot-proof way to draw a chair, by first drawing a parallelogram (something you should already know how to do). Using this as the “base” of…
Read more…complex 1H NMR spectrum. At low temperatures interconversions are slow; the chemical shifts of the axial and equatorial protons are resolved, and complex spin-spin couplings occur. At -100 °C, however,…
Read moreThe Organic Chemistry Reaction and Mechanism Guide will help you understand more than 185 of the most common reactions encountered in undergraduate organic chemistry. The guide covers all the necessary…
Read more…adamantane was thought to be relatively “strain-free”. (Adamantane was a pet topic of his, as one of his most highly-cited papers is a 1-page communication in JACS on the simple…
Read more