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Our studies of this series which have been reported as "Studies on the Reactivity of Some Halogenohydrocarbons with Various Metals. No. I--VI." were chiefly related to the reaction between benzyl halides or their derivatives and various metals, and also to the promoting or inhibiting action of some organic reagents for these reactions. In one of these reports, the promoting action of small quantities of phenols for the self-condensation reaction of benzyl chloride with gritty aluminum was shown . In this report, for the case of the existing quantity of phenols to benzyl halides being 1:1 or the more in mol ratio the reaction of dehydrohalogeno-condensation with aluminum was checked. Futhermore, it is investigated that the self-condensation of benzyl halides and the benzylization of phenols both occur simultaneously as competitive reaction. The result obtained is as follows: (i) From the determinated values of mean molecular weight for respective reaction products, it was shown that the benzyl halides were mostly di-benzylized and the phenols mainly mono-benzylized. (ii) The proportion of benzyl phenols in these reaction product was increased by the order of phenol, m-cresol>o-cresol>p-cresol for the mol ratio 1:1 and by the increasin g of mol numbers of phenols used . The elevation of reaction temperature increased, not altered and decreased this proportion for mol ratio 1:1, 2:1 and 3:1 respectively., 著者らはハロゲン化ベンジルまたはその誘導体と金属類との反応，ならびにそれらの反応に対する各種の有機試薬類の添加効果などについての一連の研究結果を「ハロゲン化炭化水素と金属類との反応性の研究第1～6報」として報告しているが，そのうちの第3報では金属Alによる塩化ベンジルの自己縮合反応が少量のフェノール類の添加によって促進されることについて述べておいた。本報ではハロゲン化ベンジルとのモル比が1:1またはそれ以上のフェノール類が存在する場合のAlによる脱ハロゲン化水素縮合の反応について検討し，ハロゲン化ベンジルの自己縮合とフェノール類のベンジル化の反応とが同時競争反応として起こることを認めたので，その詳細について報告する。

In the previous paper,it was our investigation that the self-condensation of benzyl halides and the benzylization of phenols both occur simultaneously as competitive reaction when the mixtures of phenols and benzyl haildes,in which the existing quantity of the former to the latter being 1:1 or the more in mole ratio,were treated with gritty aluminum for the condensation by dehydrohalogenat ion. Since these reactions with aluminum needed the addition of some quantity of nitrobenzene,similar reactions with iron is now carried out without this addition. The results obtained are as follows: (i) Using iron powder,benzylization of phenols by benzyl halide smoothly proceeded to the considerable yield,and it is presumed that the iron halide produced as the intermediate product may catalyze the alkylation. (ii) From the determined values of mean molecular weight for the respective reaction products,it was shown that the phenols were mono- and di-benzylized,and the benzyl halides di- and tri- benzylized. (iii) Some information was obtained for the reaction temperature dependance of mean molecular weight of self-condensation products and benzyl phenols having maximum at the specific reaction temperature for respective sort of phenols. (iv) In the benzylization of phenols,p-benzyizlation was easier at lower temperature and o-benzylization at higher temperature., 前報では，フェノール類とハロゲン化ベンジルとの混合物の金属アルミニウムによる脱ハロゲン化水素反応においては，ハロゲン化ベンジルの自己縮合とフェノール類のベンジル化の反応とが同時競争反応として起こることを認め，両反応生成物の性質や生成比率の反応条件による変化などについて述べた。しかし，その場合にはある量のニトロベンゼンの共存を必要としたので，本報ではそれを要しない鉄粉を触媒とする場合について同様な研究を行なったものである。