Practice Drawing a Ring-Expansion via the [1,2R] Step

The video explains how carbocations undergo ring expansion via the [1,2R] step. It also demonstrates the proper way to draw curved arrows. This web page allows you imitate what you see in the video. Here's how:

Open a full-size sketcher window by clicking on the window below the words "Click window to edit". Follow along in the video, pausing as necessary, and reproduce what you see. Whenever you use the 2-electron arrow, pay close attention to the blue parentheses. To check yourself, use the ACE Organic mechanism calculator window. Just copy and paste a structure (include the curved arrows) into the calculator's MarvinSketch window. Then click on View Products. The product in the Mechanism Calculator's window should match the structure of your product. See the notes below for more details.

Click window to edit

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