Comments on: Partial Reduction of Alkynes With Lindlar’s Catalyst

By: James Ashenhurst

James Ashenhurst — Sat, 09 Dec 2023 23:40:13 +0000

In reply to Sara. Yes, assuming it's an internal alkyne and not a terminal alkyne.

By: Sara

Sara — Sun, 04 Jun 2023 03:44:09 +0000

will product formed in lindlar’s catalyst show geometrical isomerism?

By: James Ashenhurst

James Ashenhurst — Mon, 22 Mar 2021 15:14:01 +0000

In reply to Aneirin Truong. No, one would generally not use a poisoned catalyst to reduce an aldehyde and ketone. Using Pt-C or Pd-C with high pressure will do the job.

By: Aneirin Truong

Aneirin Truong — Sun, 21 Mar 2021 17:04:58 +0000

Is this catalyst powerful enough to reduce ketones and aldehydes to secondary and primary alcohols, respectively?

By: James Ashenhurst

James Ashenhurst — Fri, 16 Oct 2020 18:44:06 +0000

In reply to Jordan. Lindlar's catalyst is a palladium based catalyst.

By: Jordan

Jordan — Thu, 08 Oct 2020 14:00:44 +0000

Why is a palladium based catalyst used more industrially, for Acetylene partial hydrogenation than Lindlar’s catalyst?

By: James Ashenhurst

James Ashenhurst — Sat, 27 Apr 2019 03:07:31 +0000

In reply to Trammie. Generally, hydrogenation leads to "cis" products (actually "syn addition") because the substrate must be adsorbed on the surface of the late metal catalyst and the hydrogen atoms are delivered on the same face.

By: Trammie

Trammie — Thu, 16 Feb 2017 22:16:37 +0000

Why does H2/Lindlar’s catalyst lead to only cis products?

By: Dr. Ram Pal

Dr. Ram Pal — Mon, 30 Jan 2017 08:22:09 +0000

In reply to aisha. because hydrogen is first adsorbed on metal surface and then transferred to the double bond (which is also held on metal surface facing one face towards metal surface) one by one from the same face.

By: PARTHASARATHY KRISHNAN

PARTHASARATHY KRISHNAN — Wed, 02 Nov 2016 06:24:26 +0000

In reply to aisha. The 2 hydrogen atoms are added from the same side. The addition is cis addition.