Uploaded August 2021 | Updated September 2026, 2 weeks ago
Learn to draw boat and chair conformations of cyclohexane. See a ring inversion (ring flip) demo using a molecular model.
Watch the whole playlist: youtube.com/playlist?list=PLvUW25kBaMMuKRkW9gDV7vlAk4Y9WRU7c
Playlists to ACE Chemistry:
youtube.com/playlist?list=PLvUW25kBaMMssGHFrR4Ee7_-8cFBvBkgN
youtube.com/playlist?list=PLvUW25kBaMMs9m0GL4dz8jSs0K4PWfqCp
youtube.com/playlist?list=PLvUW25kBaMMvs5nsG1VUQA0wsP9LGEQha Can you solve it before Kekule?
youtube.com/playlist?list=PLvUW25kBaMMuHwUffHLOozSFQ0Cz_iTnC
youtube.com/playlist?list=PLvUW25kBaMMv7_3jTEAe3vVZqPhsjf5Oy
youtube.com/playlist?list=PLvUW25kBaMMtc45U4K2b0Dm88L9D7d0EE
🍵Buy the Professor a tea to keep the videos coming: patreon.com/c/ChemistryinaNutshell
🧪 For the chemist who prefers eyebrows: Grab the complete collection of 11 hand-drawn lab safety posters: payhip.com/b/SNQL0
🔬As an Amazon Affiliate, I earn from qualifying purchases at no extra cost to you. Start your shopping here: amazon.com/shop/chemnut?ccs_id=11f20bce-5f74-427b-85fb-bdf66849405a
Time Stamps:
0:00 Introduction
0:08 Drawing of boat and chair conformations
0:25 Molecular model of boat conformation
0:43 * I misspoke: Carbons 1 & 4, not 1 & 3
0:54 Molecular model of boat conformation changing into chair conformation
1:04 Molecular model of chair conformation
1:21 Showing axial and equatorial groups
2:02 Ring inversion (ring flip) using a molecular model
2:37 Drawing axial and equatorial groups on chair conformation
#cyclohexane #ringflip #chemistry
Learn to draw boat and chair conformations of cyclohexane. See a ring inversion (ring flip) demo using a molecular model.
Watch the whole playlist: youtube.com/playlist?list=PLvUW25kBaMMuKRkW9gDV7vlAk4Y9WRU7c
Playlists to ACE Chemistry:
youtube.com/playlist?list=PLvUW25kBaMMssGHFrR4Ee7_-8cFBvBkgN
youtube.com/playlist?list=PLvUW25kBaMMs9m0GL4dz8jSs0K4PWfqCp
youtube.com/playlist?list=PLvUW25kBaMMvs5nsG1VUQA0wsP9LGEQha Can you solve it before Kekule?
youtube.com/playlist?list=PLvUW25kBaMMuHwUffHLOozSFQ0Cz_iTnC
youtube.com/playlist?list=PLvUW25kBaMMv7_3jTEAe3vVZqPhsjf5Oy
youtube.com/playlist?list=PLvUW25kBaMMtc45U4K2b0Dm88L9D7d0EE
🍵Buy the Professor a tea to keep the videos coming: patreon.com/c/ChemistryinaNutshell
🧪 For the chemist who prefers eyebrows: Grab the complete collection of 11 hand-drawn lab safety posters: payhip.com/b/SNQL0
🔬As an Amazon Affiliate, I earn from qualifying purchases at no extra cost to you. Start your shopping here: amazon.com/shop/chemnut?ccs_id=11f20bce-5f74-427b-85fb-bdf66849405a
Time Stamps:
0:00 Introduction
0:08 Drawing of boat and chair conformations
0:25 Molecular model of boat conformation
0:43 * I misspoke: Carbons 1 & 4, not 1 & 3
0:54 Molecular model of boat conformation changing into chair conformation
1:04 Molecular model of chair conformation
1:21 Showing axial and equatorial groups
2:02 Ring inversion (ring flip) using a molecular model
2:37 Drawing axial and equatorial groups on chair conformation
#cyclohexane #ringflip #chemistry




![SN2 Trap: Why (R) Doesnt Always Invert to (S)
Think SN2 always inverts R/S configuration? Dont fall for the (R) to (R) trap on your midterm! If youve been taught the Golden Rule that SN2 must flip between R/S, this video is required viewing.
Were dissecting a textbook lie utilizing a 1970s breakthrough from the H.C. Brown lab. Ill show you exactly how an (R) reactant can produce an (R) product through a perfectly standard SN2 mechanism, WITHOUT breaking a single rule.
📘Master the Mechanisms! Grab the Organic Chemistry Reaction Mechanisms Survival Guide: https://payhip.com/b/rYbBp
🧠Full Mechanisms Playlist: https://www.youtube.com/playlist?list=PLvUW25kBaMMtvqt_IBtezyBX_kk447pxZ
🍵Buy the Professor a tea to keep the videos coming: https://www.patreon.com/c/ChemistryinaNutshell
🧬If you need a refresher on chirality for mechanisms to make sense, start here: https://www.youtube.com/playlist?list=PLvUW25kBaMMupOdw1Wgy8YauiQ40J_5nx
⚗️For all of my ochem videos in one place: https://www.youtube.com/playlist?list=PLvUW25kBaMMuKRkW9gDV7vlAk4Y9WRU7c
🥼If you need to take the MCAT: https://www.youtube.com/playlist?list=PLvUW25kBaMMuJZI5IVWO8X0syBANn-YqY
What youll master in this gotcha question breakdown:
• The CIP Trap: Why (R) to (R) isnt a mechanism failure, but a priority change.
• Super-Hydride Logic: Dissection lithium triethylborohydride (LiEt3BH) to see why its the surgical strike of nucleophiles.
• The Spatial Literacy Test: Using 3D molecular models to see the backside attack when the 2D drawings fail you.
0:00 The 5-Point SN2 Chirality Trap
0:23 Tiebreakers: Assigning Priorities to the Reactant
1:00 The Hand Rule: Confirming the (R) Configuration
1:26 Is Super-Hydride too bulky for SN2?
1:48 [SOURCE] Krishnamurthy & Brown Paper (1982)
2:08 3D Model Walkthrough: Geometry of the Nucleophile
2:54 The Mechanism: Concerted Backside Attack
3:55 The Umbrella Inversion vs. Configuration
4:30 Re-evaluating Priorities for the Product
4:56 The Hand Rule: Why the Product is (R)
5:10 The Verdict: Why (R) stayed (R)
5:23 Pro-Tip: How to assign R/S in seconds
📖The Research (Primary Source for LiEt3BH): Selective reductions. 31. Lithium triethylborohydride as an exceptionally powerful nucleophile. A new and remarkably rapid methodology for the hydrogenolysis of alkyl halides under mild conditions
S. Krishnamurthy and Herbert C. Brown
The Journal of Organic Chemistry 1983 48 (18), 3085-3091
DOI: 10.1021/jo00166a031
https://pubs.acs.org/doi/pdf/10.1021/jo00166a031
🥽As an Amazon Affiliate, I earn from qualifying purchases at no extra cost to you.
🥼My recommendations: https://www.amazon.com/shop/chemnut?ccs_id=11f20bce-5f74-427b-85fb-bdf66849405a
🔬Start any shopping journey here: https://amzn.to/3IXuAcS
Citations:
Paula Yurkanis Bruice, Organic Chemistry 8th ed
https://openstax.org/details/books/organic-chemistry
https://openstax.org/details/books/chemistry-2e
Music: https://youtu.be/lL6AsbG07xY SN2 Trap: Why (R) Doesnt Always Invert to (S)](https://i.ytimg.com/vi/IHSRGx_GlZA/mqdefault.jpg)





