Advertisement

This site uses cookies to enhance your user experience. By continuing to use this site you are agreeing to our COOKIE POLICY.

ACCEPT AND CLOSE

If you have an ACS member number, please enter it here so we can link this account to your membership. (optional)

ACS values your privacy. By submitting your information, you are gaining access to C&EN and subscribing to our weekly newsletter. We use the information you provide to make your reading experience better, and we will never sell your data to third party members.

The key to knowledge is in your (nitrile-gloved) hands

Already an ACS Member?  

Basic

$0 Community Associate

ACS’s Basic Package keeps you connected with C&EN and ACS.

  • Access to 6 digital C&EN articles per month on cen.acs.org
  • Weekly delivery of the C&EN Essential newsletter
JOIN NOW
Standard

$80 Regular Members & Society Affiliates

ACS’s Standard Package lets you stay up to date with C&EN, stay active in ACS, and save.

Eligibility restrictions apply. Review ACS Membership Packages to see if you qualify.

JOIN NOW
Premium

$160 Regular Members & Society Affiliates
$55 Graduate Students
$25 Undergraduate Students

ACS’s Premium Package gives you full access to C&EN and everything the ACS Community has to offer.

  • Unlimited access to C&EN’s daily news coverage on cen.acs.org
  • Weekly delivery of the C&EN Magazine in print or digital format
  • Access to our Chemistry News by C&EN mobile app
  • Significant discounts on registration for most ACS-sponsored meetings
ACS offers discounts for some countries outside the United States. This discount is shown at checkout, if applicable.

JOIN NOW

Thank you!

Your account has been created successfully, and a confirmation email is on the way.

Your username is now your ACS ID.

ENJOY UNLIMITED ACCES TO C&EN

Synthesis

Chemistry In Pictures

Chemistry in Pictures: Homer’s donut

by Craig Bettenhausen
September 14, 2018
Advertisement

Most Popular in Synthesis

 

A pink toroid has formed in a round-bottom flask.

Robert Pipal works on cross-coupling methods—reactions that fuse two molecules--in David MacMillan’s lab at Princeton University. When isolating the product of a reductive amination between an amine and an aldehyde, he placed the pink, oily substance under high vacuum to remove the last traces of solvent. “The pink oil surrounding the round bottom flask kind of exploded into a pink donut,” he says. Next up? Figure out why it’s pink. “I believe the light pink color is due to a colored trace impurity, but I’m not exactly sure what the impurity is.”

Credit: Robert Pipal/@MacMillan_Lab

Do science. Take pictures. Win money. Enter our photo contest here.

Related C&EN Content:

Chemistry in Pictures: So pure it pops

Strong, aliphatic C–H bonds succumb to direct arylation

Photoswitchable drugs could light the way to more targeted treatments

Chemical & Engineering News
ISSN 0009-2347
Copyright © 2024 American Chemical Society

You might also like...

Serving the chemical, life science, and laboratory worlds
Chemistry in Pictures: Not Tang
Serving the chemical, life science, and laboratory worlds
Chemistry in Pictures: Holiday light
Serving the chemical, life science, and laboratory worlds
Chemistry in Pictures: Pedagogical potion

.

Article:

This article has been sent to the following recipient:

0 /1 FREE ARTICLES LEFT THIS MONTH Remaining
Chemistry matters. Join us to get the news you need.
GET MORE
GET MORE