Bach, Thorsten et al. published their research in Journal of Organic Chemistry in 2002 | CAS: 10297-05-9

1-Chloro-4-iodobutane (cas: 10297-05-9) belongs to iodide derivatives. Organic iodides can be alkyl, alkenyl, or alkynyl, and all of them are very reactive toward with many kinds of nucleophiles. The C–I bond is the weakest of the carbon–halogen bonds. These bond strengths correlate with the electronegativity of the halogen, decreasing in the order F > Cl > Br > I.Reference of 10297-05-9

Synthesis of 2′-Substituted 4-Bromo-2,4′-bithiazoles by Regioselective Cross-Coupling Reactions was written by Bach, Thorsten;Heuser, Stefan. And the article was included in Journal of Organic Chemistry in 2002.Reference of 10297-05-9 This article mentions the following:

The synthesis of the title compounds [I; R = Bu, CH2CHMe2, CH2CH2Ph, (CH2)4Cl, CHMe2, sec-Bu, Ph, CCCMe3, CCPh, etc.] was achieved in two steps starting from readily available 2,4-dibromothiazole (II). In a regioselective Pd(0)-catalyzed cross-coupling step, II was converted to a variety of 2-substituted 4-bromothiazoles (III, same R) (10 examples, 65-85% yield). Alkyl and aryl zinc halides were employed as nucleophiles to introduce an alkyl or aryl substituent. The Sonogashira protocol was followed to achieve an alkynyl-debromination. Bromo-lithium exchange at C-4 and subsequent transmetalation to zinc or tin converted the 4-bromothiazoles to carbon nucleophiles, which underwent a second regioselective cross-coupling with another equivalent of 2,4-dibromothiazole. The Negishi cross-coupling gave high yields of the 2′-alkyl-4-bromo-2,4′-bithiazoles (88-97%). The synthesis of the 2′-phenyl- and 2′-alkynyl-4-bromo-2,4′-bithiazoles required a Stille cross-coupling that did not proceed as smoothly as the Negishi cross-coupling (58-62% yield). The title compounds, which were accessible in total yields of 38-82%, are versatile building blocks for the synthesis of 2,4′-bithiazoles. In the experiment, the researchers used many compounds, for example, 1-Chloro-4-iodobutane (cas: 10297-05-9Reference of 10297-05-9).

1-Chloro-4-iodobutane (cas: 10297-05-9) belongs to iodide derivatives. Organic iodides can be alkyl, alkenyl, or alkynyl, and all of them are very reactive toward with many kinds of nucleophiles. The C–I bond is the weakest of the carbon–halogen bonds. These bond strengths correlate with the electronegativity of the halogen, decreasing in the order F > Cl > Br > I.Reference of 10297-05-9

Referemce:
Iodide – Wikipedia,
Iodide – an overview | ScienceDirect Topics – ScienceDirect.com