ChemicalBook CAS DataBase List Tin tetrachloride

Tin tetrachloride synthesis

5synthesis methods

Product Name:Tin tetrachloride
CAS Number:7646-78-8
Molecular formula:Cl4Sn
Molecular Weight:260.52

Tin(II) chloride is prepared by dissolving tin in hydrochloric acid followed by evaporation of the solution and crystallization.

1H,3H-Naphtho[1,8-cd]pyran-1,3-dione, 5-nitro-6-[(phenylmethyl)thio]-

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1H,3H-Naphtho[1,8-cd]pyran-1,3-dione, 5-amino-6-[(phenylmethyl)thio]-

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7646-78-8
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$11.00/5g

Yield:-

Reaction Conditions:

with hydrogenchloride;tin(ll) chloride in water at 90; for 2 h;

Steps:

9.1

(1)4-benzylsulhydryl-3-nitro-1,8-naphthalic anhydride 4-bromo-3-nitro-1,8-naphthalic anhydride (0.0072mol) (4) was dissolved in DMF (45ml) in 100 ml of three-neck flask. After addition of K₂CO_{3 (}0.0036mol) and benzyl sulfhydrate (0.0072mol), the solution was stirred at 80°C for 8h until there was no raw material. The reaction mixture was poured into ice-water, then salted out under stirring. A yellow solid precipitated after filtration and washing by water and dried to give khaki solid (2.47g, 83%): mp 188-193°C (uncorrected).

References:

EP1626050,2006,A1 Location in patent:Page/Page column 8