MWF_20 - Organic Lecture Series CH 310/318 M LECTURE 20...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Organic Lecture Series 1 CH 310/318 M LECTURE 20 Textbook Assignment: Chapter 7- Alkynes Today’s Topics: Alkenes Alkenes - Reduction Reduction POW 7 posted Organic Lecture Series 2 • Most alkenes react with H 2 in the presence of a transition metal catalyst to give alkanes. – Commonly used catalysts are Pt, Pd, Ru, and Ni. – The process is called catalytic reduction catalytic reduction or, alternatively, catalytic hydrogenation catalytic hydrogenation. – Addition occurs with syn stereoselectivity. + H 2 Pd Cyclohexene Cyclohexane 25°C, 3 atm Reduction of Alkenes Reduction of Alkenes
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Organic Lecture Series 3 • Mechanism of catalytic hydrogenation. Reduction of Alkenes Reduction of Alkenes Organic Lecture Series 4 Δ Δ H H o of Hydrogenation of Hydrogenation CH 2 =CH 2 CH 3 CH=CH 2 Name Structural Formula Δ [kJ (kcal)/mol] Ethylene Propene 1-Butene cis -2-Butene trans -2-Butene 2-Methyl-2-butene 2,3-D imethyl-2-butene -137 (-32.8) -126 (-30.1) -127 (-30.3) -120 (-28.6) -115 (-27.6) -113 (-26.9) -111 (-26.6)
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 10/10/2010 for the course CH 54600 taught by Professor Colorpart during the Fall '10 term at University of Texas.

Page1 / 5

MWF_20 - Organic Lecture Series CH 310/318 M LECTURE 20...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online