Pre-vitamin D3 then spontaneously isomerizes to Vitamin D3 in a antarafacial hydride [1,7]Sigmatropic shift.
Click this LINK to visit the original image and attribution information. Right click on the image to save the 800px teaching JPEG.
![Pre-vitamin D3 then spontaneously isomerizes to Vitamin D3 in a antarafacial hydride [1,7]Sigmatropic shift.](image_science_archive_68/040710_68/391800_Reaction-PrevitaminD3-VitaminD3_68.jpg)
Pre-vitamin D3 then spontaneously isomerizes to Vitamin D3 in a antarafacial hydride [1,7]Sigmatropic shift.