ORGLIST: PIGMENT YELLOW 101 (help)

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From: Mathews Jose K. (mathews_jose_k$##$yahoo.co.in)
Date: Wed Mar 16 2005 - 02:33:25 EST

Previous message: madhav balakrishna mallia: "ORGLIST: help and suggestions"

HI ALL,

I’m synthesizing PIGMENT YELLOW 101 (it’s the aldazine of 2-hydroxy naphthaldehyde) so I go by the route 2-naphthol to 2-hydroxy naphthaldehyde then the condensation 2 moles of the aldhehyde with hydrazine hydrate to get the pigment.

For the sysnthesis of aldehyde im getting only 45% yield through RT reaction (chloroform and sodium hydroxide) Can anybody tell a better route where no gas is used and no cynide is used. Thx in advance.

Any patents on pigment yellow 101 is also a nice reference

MATHEWS JOSE

MUMBAI

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Previous message: madhav balakrishna mallia: "ORGLIST: help and suggestions"

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